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DocumentTranscranial magnetic stimulation and motor evoked potentials in speech perception research2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-267
Location: BF-GMS
Title:
267 - The neurophysiology of vocal imitation of speech
Duration: 2015-10 - 2017-11
Researcher(s):
Patricia Martine Adank, Joseph Devlin
Institution(s): UCL, Speech, Hearing and Phonetic Sciences, London (UK)
Contents: Contents:
Application form
Correspondence
Progress reports
Final report
Articles
Language: eng
Author:
Adank, P. M.
Secondary author(s):
Devlin, J.
Number of reproductions:
1
Keywords:
Imitation / Speech / Inhibiton / Acoustics / Psychophysiology

Reference code: PT/FB/BL-2014-267.02
Location: BF-GMS
Title:
Transcranial magnetic stimulation and motor evoked potentials in speech perception research
Publication year: 2017
URL:
http://www.tandfonline.com/doi/abs/10.1080/23273798.2016.1257816
Abstract/Results: ABSTRACT:
Transcranial magnetic stimulation (TMS) has been employed to manipulate brain activity and to establish cortical excitability by eliciting motor evoked potentials (MEPs) in speech processing research. We will discuss the history, methodological underpinnings, key contributions, and future directions for studying speech processing using TMS and by eliciting MEPs. Furthermore, we will discuss specific challenges that are encountered when examining speech processing using TMS or by measuring MEPs. We suggest that future research may benefit from using TMS in conjunction with neuroimaging methods such as functional Magnetic Resonance Imaging or electroencephalography, and from the development of new stimulation protocols addressing cortico-cortical inhibition/facilitation and interhemispheric connectivity during speech processing.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Adank, P. M.
Secondary author(s):
Nuttall, H., Kennedy-Higgins, D.
Document type:
Article
Number of reproductions:
1
Reference:
Adank, P. M., Nuttall, H., & Kennedy-Higgins, D. (2017). Transcranial magnetic stimulation and motor evoked potentials in speech perception research. Language, Cognition and Neuroscience, 32(7), 1-10. https://doi.org/10.1080/23273798.2016.1257816
2-year Impact Factor: 2.086|2017
Times cited: 7|2025-09-16
Indexed document: Yes
Quartile: Q1
Keywords: Speech / Perception / Transcranial magnetic stimulation (TMS) / Motor evoked potentials (MEP) / Comprehension
DocumentResponses in mesoscopic clusters of human MT+ reflect the perceived direction of ambiguous motion2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.04
Location: BF-GMS
Title:
Responses in mesoscopic clusters of human MT+ reflect the perceived direction of ambiguous motion
Publication year: 2016
URL:
https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=3402
Abstract/Results: ABSTRACT:
INTRODUCTION
Advances in ultra-high field (uhf) fMRI now allow for probing functional responses at the level of mesoscopic structures such as columns and layers (e.g. [1-5]). This offers the opportunity to relate responses at the level of cortical building blocks to perception. Doing so, however, requires using stimuli that allow for dissociating sensory input and perceptual interpretation.
Here, we presented subjects with a bistable motion quartet while recording responses in human motion complex (hMT+). The "motion quartet" gives rise to two mutually exclusive interpretations: either horizontal or vertical motion. Importantly, the percepts switch over time, while the sensory input remains constant throughout.
In previous studies, we found that the level of signal measured in hMT+ as a whole is reflective of such perceptual switches [6]. We also showed that it is feasible to map columnar-level clusters within hMT+ that prefer specific axes of motion [7]. Combining these two research lines here, we investigated the role of mesoscopic hMT+ clusters in perceived motion direction using uhf fMRI at 7 Tesla.
METHODS
Seven subjects (median age = 25 y, 2 females) participated in the study. Area hMT+ was localised with standard moving and static dot stimuli [8] using a standard GE EPI sequence at 1.6 mm isotropic resolution. We then zoomed in hMT+ using a sub-millimetre GE EPI sequence (TE = 25.6 ms; FA = 69°; TR = 2000 ms; resolution: 0.8 mm isotropic). Subjects were presented with either the bistable motion quartet ("ambiguous motion") or a motion display in which squares moved unambiguously either along the horizontal or vertical motion trajectory ("physical motion"). For both stimulus types, participants reported the perceived direction of motion by button presses.
Two participants were excluded from analyses due to excessive head motion or inappropriate task performance. Data were analysed using the standard general linear model. All analyses were limited to voxels that responded more to moving than static dots (p < 0.005), based on hMT+ localiser data. For the ambiguous and physical motion experiments, voxels were considered part of the vertical cluster if their time courses were modulated by vertical motion and if they responded more to vertical than to horizontal motion (t > 1.5). Voxels were considered part of the horizontal cluster if reverse conditions applied. For event-related averaging, functional signals were extracted from identified motion clusters, converted to percentage signal change, and averaged for horizontal and vertical stimulus condition.
RESULTS
For both the physical and ambiguous motion experiments, we observed clusters of voxels in hMT+ preferring either horizontal or vertical motion stimuli. Upon qualitative inspection there was considerable overlap in voxel preferences between the two experiments (Figure 1). This overlap was also shown in a quantitative analysis (Figure 2). Event-related averages indicated that signal time courses in horizontal and vertical clusters reflected the perceived motion direction, for both the physical (Figure 3) and the ambiguous (Figure 4) motion display. Thus, when subjects indicated a switch in perception from vertical to horizontal motion, this was paralleled by an increase in signal in the horizontal hMT+ cluster and a decrease in the vertical cluster. Reversely, when subjects reported a switch from horizontal to vertical motion, signal increased in the vertical cluster and decreased in the horizontal one.
CONCLUSIONS
We found preliminary evidence that the content of conscious perception of motion stimuli can be read out from dynamic activation changes of direction-selective, mesoscopic clusters in human MT+. Previous studies [9] demonstrated a coupling between visual awareness and activity in different macroscopic brain areas. Our study indicates for the first time that uhf fMRI studies might allow for disentangling the contribution to visual awareness from mesoscopic clusters within one specialized brain area.
Accessibility: Document does not exist in file
Language:
eng
Author:
Schneider, M.
Secondary author(s):
Goebel, R., Kemper, V., Castelo-Branco, M., Ugurbil, K., Yacou, E., de Martino, F.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Schneider, M., Goebel, R., Kemper, V., Castelo-Branco, M., Ugurbil, K., Yacou, E., & de Martino, F. (2016, June). Responses in mesoscopic clusters of human MT+ reflect the perceived direction of ambiguous motion. Poster presented at the 22nd Annual Meeting of the Organization for Human Brain Mapping, Geneve, Switzwerland. Abstract retrieved at https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=3402
Indexed document: No
Keywords: Consciousness / Cortical Columns / Functional magnetic resonance imaging (fMRI) / Perception / Vision
DocumentLong-range perceptual integration of visual motion revealed at high resolution 7T fMRI2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.05
Location: BF-GMS
Title:
Long-range perceptual integration of visual motion revealed at high resolution 7T fMRI
Publication year: 2016
URL:
https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=2467
Abstract/Results: ABSTRACT:
INTRODUCTION
It has been suggested that activity in the human motion complex (hMT+) reflects global motion interpretation of perceptual bistability (Castelo-Branco et al., 2002). Here we investigated how the bistable perception is mapped on hMT+ columnar-like features with a paradigm in which motion coherence requires interhemispheric integration and incoherence breaks such binding across hemispheres (Wallach, 1935).
METHODS
We acquired 7 Tesla fMRI data (0.8 mm isotropic resolution, TR=2000 ms, TE=26 ms, 28 slices echo planar imaging (EPI)) from 9 healthy participants, presented with a bistable (ambiguous) stimulus. The ambiguous stimulus consisted of continuously moving oblique lines forming a v-shape. With central fixation, participants alternated between two percepts: downward global motion perception (the lines are perceived moving downward as a single roof-like object) and the inward movement perception (the lines are perceived as two separate objects, one in each visual hemi-field, moving inward). An unambiguous (control) stimulus was also presented to the participants. By disambiguating the stimulus with additional moving dots the participants were biased to unambiguously perceive each kind of global percept, as induced by dot motion. In order to functionally localize direction of motion-tuned columnar-like features in hMT+, we also showed participants blocks of moving lines in different axes of motion, interleaved with static lines. Since previous studies have reliably mapped axes-of-motion, we pooled responses with opposing directions (Zimmermann et al., 2011). Analyses results were considered using only significantly activated voxel clusters at P<0.05 (corrected).
RESULTS
In all participants, both ambiguous and unambiguous stimulation conditions evoked stronger hMT+ bilateral activation during inward movement perception, entailing interhemispheric segregation, than downward (implying interhemispheric integration), which is to be expected if distinct neuronal assemblies are activated during inward motion, i.e. leftward plus rightward movement, compared to a common population for downward motion. Furthermore, for ambiguous stimulation the hMT+ correlation across hemispheres tend to be higher during downward coherent percept than during the inward percept. The definition of the axes of motion preference was confirmed by the successful automatic classification of each displayed movement orientation. The analysis of the ambiguous task results inside groups of voxels with different axes of motion preferences confirmed a higher activation of voxels with preference for the vertical movement during the downward movement perception than during inward movement perception. On the other hand, voxels with preference for the horizontal movement showed increased activation during inward perception, suggesting that perceptual interhemispheric representations can be found at the columnar level (Fig.1).
CONCLUSIONS
We conclude that perceptual representations requiring either interhemispheric segregation or integration can be localized at the columnar level in area hMT+. Accordingly, different movement percepts are bilaterally modulated by hMT+ columnar-level responses with different axes of motion preferences: the inward percept (entailing segregation) modulates activity in the columns preferring the horizontal axis of motion, and the downward percept (entailing integration) modulates activity in the columns preferring the vertical axis of motion. Our results extend to the interhemispheric domain previous studies suggesting an important role for hMT+ columns in representing bistable perception (Goebel et al., 2014; Schneider et al., 2015) and demonstrating that not only the transition of perceptual states but also the content of perception can be read-out directly from the activity patterns across axes of motion columns in hMT+ area.
Accessibility: Document does not exist in file
Language:
eng
Author:
Sousa, T.
Secondary author(s):
Kemper, V., Costa, G., Duarte, J., Martins, R., Goebel, R., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Sousa, T., Kemper, V., Costa, G., Duarte, J., Martins, R., Goebel, R., & Castelo-Branco, M. (2016, June). Long-range perceptual integration of visual motion revealed at high resolution 7T fMRI. Poster presented at the 22nd Annual Meeting of the Organization for Human Brain Mapping, Geneve, Switzwerland. Abstract retrieved at https://ww5.aievolution.com/hbm1601/index.cfm?do=abs.viewAbs&abs=2467
Indexed document: No
Keywords: Functional magnetic resonance imaging (fMRI) / high field MR / Perception
DocumentTemporal dynamics of TMS interference over preparatory alpha activity during semantic decisions2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-122
Location: BF-GMS
Title:
122 - Internal and External World in Parietal Cortex
Duration: 2015-02 - 2016-09
Researcher(s):
Paolo Capotosto
Institution(s): Department of Neuroscience, Imaging and Clinical Science, University "G. D'Annunzio", Chieti (Italy)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Progress report
Final report
Articles
Language: eng
Author:
Capotosto, P.
Number of reproductions:
1
Keywords:
Parietal cortex / Dorsal Attention Network / Default-Mode Network / EEG rhythms / Psychophysiology

Reference code: PT/FB/BL-2014-122.06
Location: BF-GMS
Title:
Temporal dynamics of TMS interference over preparatory alpha activity during semantic decisions
Publication year: 2017
URL:
http://www.nature.com/articles/s41598-017-02616-0
Abstract/Results: ABSTRACT:
The mean amplitude of the EEG alpha (8–12?Hz) power de-synchronization (ERD) is a robust electrophysiological correlate of task anticipation. Furthermore, in paradigms using a fixed period between warning and target stimuli, such alpha de-synchronization tends to increase and to peak just before target presentation. Previous studies from our group showed that the anticipatory alpha ERD can be modulated when magnetic stimulation is delivered over specific cortical regions during a variety of cognitive tasks. In this study we investigate the temporal dynamics of the anticipatory alpha ERD and test whether the magnetic stimulation produces either a general attenuation or an interruption of the typical development of alpha ERD. We report that, during a semantic decision task, rTMS over left AG, a region previously associated to semantic memory retrieval, shortened the peak latency and decreased the peak amplitude of the anticipatory alpha de-synchronization as compared to both active (left IPS) and non-active (Sham) TMS conditions. These results, while supporting the causal role of the left AG in the anticipation of a semantic decision task, suggest that magnetic interference not simply reduces the mean amplitude of anticipatory alpha ERD but also interrupts its typical temporal evolution in paradigms employing fixed cue-target intervals.
Accessibility: Document exists in file
Language:
eng
Author:
Spadone, S.
Secondary author(s):
Sestieri, C., Baldassare, A., Capotosto, P.
Document type:
Article
Number of reproductions:
1
Reference:
Spadone, S., Sestieri, C., Baldassare, A., & Capotosto, P. (2017). Temporal dynamics of TMS interference over preparatory alpha activity during semantic decisions. Scientific Reports, 7: 2372. https://doi.org/10.1038/s41598-017-02616-0
2-year Impact Factor: 4.122|2017
Times cited: 13|2025-09-16
Indexed document: Yes
Quartile: Q1
Keywords: Long-term memory / Perception

Temporal dynamics of TMS interference over preparatory alpha activity during semantic decisions

Temporal dynamics of TMS interference over preparatory alpha activity during semantic decisions
DocumentImaging posture veils neural signals2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-118
Location: BF-GMS
Title:
118 - Recursive consciousness training: Using neurofeedback to induce altered states
Duration: 2015-09 - 2017-11
Researcher(s):
Amir Raz, Niels Birbaumer, Robert T Thibault
Institution(s): Montreal Neurological Institute, McGill University (Canada); Institute of Medical Psychology and Behavioral Neurobiology, University of Tübingen (Germany)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Language: eng
Author:
Raz, A.
Secondary author(s):
Birmaumer, N., Thibault, R. T.
Number of reproductions:
3
Keywords:
Brain Self-Regulation / Altered States of Consciousness / Neurofeedback / Meditation / Psychophysiology and Parapsychology

Reference code: PT/FB/BL-2014-118.06
Location: BF-GMS
Title:
Imaging posture veils neural signals
Publication year: 2016
URL:
http://journal.frontiersin.org/article/10.3389/fnhum.2016.00520/full
Abstract/Results: ABSTRACT:
Whereas modern brain imaging often demands holding body positions incongruent with everyday life, posture governs both neural activity and cognitive performance. Humans commonly perform while upright; yet, many neuroimaging methodologies require participants to remain motionless and adhere to non-ecological comportments within a confined space. This inconsistency between ecological postures and imaging constraints undermines the transferability and generalizability of many a neuroimaging assay. Here we highlight the influence of posture on brain function and behavior. Specifically, we challenge the tacit assumption that brain processes and cognitive performance are comparable across a spectrum of positions. We provide an integrative synthesis regarding the increasingly prominent influence of imaging postures on autonomic function, mental capacity, sensory thresholds, and neural activity. Arguing that neuroimagers and cognitive scientists could benefit from considering the influence posture wields on both general functioning and brain activity, we examine existing imaging technologies and the potential of portable and versatile imaging devices (e.g., functional near infrared spectroscopy). Finally, we discuss ways that accounting for posture may help unveil the complex brain processes of everyday cognition.
Accessibility: Document exists in file
Language:
eng
Author:
Thibault, R. T.
Secondary author(s):
Raz, A.
Document type:
Article
Number of reproductions:
3
Reference:
Thibault, R. T., & Raz, A. (2016). Imaging posture veils neural signals. Frontiers in Human Neuroscience, 10, 1-8. https://doi.org/10.3389/fnhum.2016.00520
2-year Impact Factor: 3.209|2016
Times cited: 20|2025-09-16
Indexed document: Yes
Quartile: Q1
Keywords: Posture / Neuroimaging / Electroencephalogram (EEG) / Functional magnetic resonance imaging (fMRI) / Upright / Supine / Cognition / Perception

Imaging posture veils neural signals

Imaging posture veils neural signals
DocumentSize aftereffects are eliminated when adaptor stimuli are prevented from reaching awareness by continuous flash suppression2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2016
Location: BF-GMS
Title:
2016 Grants
Start date: 2017-01

Reference code: PT/FB/BL-2016-152
Location: BF-GMS
Title:
152 - The role of the lateral occipital area in the visual processing of object size, shape, and orientation within and outside conscious awareness
Duration: 2017-03 - 2019-09
Researcher(s):
Philippe Chouinard, Irene Sperandio, Robin Laycock
Institution(s): La Trobe University, Melbourne (Australia); School of Psychology, University of East Anglia, Norwich (UK)
Contents: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Final report
Articles
Author: Chouinard, P.
Secondary author(s):
Sperandio, I., Laycok, R.
Number of reproductions:
1
Keywords:
Lateral occiptal area (LO) / Continuous Flash Superssion (CFS) / Transcranial magnetic stimulation (TMS) / Object features / Psychophysiology

Reference code: PT/FB/BL-2016-152.02
Location: BF-GMS
Title:
Size aftereffects are eliminated when adaptor stimuli are prevented from reaching awareness by continuous flash suppression
Publication year: 2017
URL:
https://www.frontiersin.org/articles/10.3389/fnhum.2017.00479/full
Abstract/Results: ABSTRACT:
Size aftereffects are a compelling perceptual phenomenon in which we perceive the size of a stimulus as being different than it actually is following a period of visual stimulation of an adapter stimulus with a different size. Here, we used continuous flash suppression (CFS) to determine if size aftereffects require a high-level appraisal of the adapter stimulus. The strength of size aftereffects was quantified following a 3-s exposure to perceptually visible and invisible adapters. Participants judged the size of a target that followed the adapter in comparison to a subsequent reference. Our experiments demonstrate that the adapter no longer influenced the perceived size of the subsequent target stimulus under CFS. We conclude that the perception of size aftereffects is prevented when CFS is used to suppress the conscious awarness of the adapting stimulus.
Accessibility: Document exists in file
Language:
eng
Author:
Laycok, R.
Secondary author(s):
Sherman, J., Sperandio, I., Chouinard, P.
Document type:
Article
Number of reproductions:
1
Reference:
Laycok, R., Sherman, J., Sperandio, I., & Chouinard, P. (2017). Size aftereffects are eliminated when adaptor stimuli are prevented from reaching awareness by continuous flash suppression. Frontiers in Human Neuroscience, 11: 479. https://doi.org/10.3389/fnhum.2017.00479
2-year Impact Factor: 2.871|2017
Times cited: 8|2025-09-16
Indexed document: Yes
Quartile: Q2
Keywords: Adaptation / Size aftereffects / Continuous flash suppression (CFS) / Conscious awareness / Perception

Size aftereffects are eliminated when adaptor stimuli are prevented from reaching awareness by continuous flash suppression

Size aftereffects are eliminated when adaptor stimuli are prevented from reaching awareness by continuous flash suppression
DocumentInterhemispheric binding of ambiguous visual motion is associated with changes in beta oscillatory activity but not with gamma range synchrony2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.06
Location: BF-GMS
Title:
Interhemispheric binding of ambiguous visual motion is associated with changes in beta oscillatory activity but not with gamma range synchrony
Publication year: 2017
URL:
http://www.mitpressjournals.org/doi/abs/10.1162/jocn_a_01158?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed
Abstract/Results: ABSTRACT:
In vision, perceptual features are processed in several regions distributed across the brain. Yet, the brain achieves a coherent perception of visual scenes and objects through integration of these features, which are encoded in spatially segregated brain areas. How the brain seamlessly achieves this accurate integration is currently unknown and is referred to as the "binding problem." Among the proposed mechanisms meant to resolve the binding problem, the binding-by-synchrony hypothesis proposes that binding is carried out by the synchronization of distant neuronal assemblies. This study aimed at providing a critical test to the binding-by-synchrony hypothesis by evaluating long-range connectivity using EEG during a motion integration visual task that entails binding across hemispheres. Our results show that large-scale perceptual binding is not associated with long-range interhemispheric gamma synchrony. However, distinct perceptual interpretations were found to correlate with changes in beta power. Increased beta activity was observed during binding under ambiguous conditions and originates mainly from parietal regions. These findings reveal that the visual experience of binding can be identified by distinct signatures of oscillatory activity, regardless of long-range gamma synchrony, suggesting that such type of synchrony does not underlie perceptual binding.
Accessibility: Document exists in file
Copyright/Reproduction:
By permission
Language:
eng
Author:
Costa, G. N.
Secondary author(s):
Duarte, J. V., Martins, R., Wibral, M., Castelo-Branco, M.
Document type:
Article
Number of reproductions:
1
Reference:
Costa, G. N., Duarte, J. V., Martins, R., Wibral, M., & Castelo-Branco, M. (2017). Interhemispheric binding of ambiguous visual motion is associated with changes in beta oscillatory activity but not with gamma range synchrony. Journal of Cognitive Neuroscience, 29(11), 1829-1844. https://doi.org/10.1162/jocn_a_01158
2-year Impact Factor: 3.468|2017
Times cited: 11|2025-09-16
Indexed document: Yes
Quartile: Q2
Keywords: Perception / Visual motion
DocumentCortical functional topography of high-frequency oscillations2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.10
Location: BF-GMS
Title:
Cortical functional topography of high-frequency oscillations
Publication year: 2017
URL:
https://www.uc.pt/en/icnas/CIP2017/CIP2017_programme/CIP2017_abstractBook
Abstract/Results: ABSTRACT:
High-frequency oscillations (HFOs) are believed to subserve a functional role in cognition, but these patterns are often not accessible to scalp EEG recordings. Intracranial studies provide a unique opportunity to link the all-encompassing range of HFOs with holistic perception. We tested whether the functional topography of HFOs (up to 250Hz) is related to perceptual decision-making. Human intracortical data were recorded (6 subjects; >250channels) during an ambiguous object-recognition task. We found a spatial topography of HFOs reflecting processing anterior dorsal and ventral streams, linked to decision independently of the type of processed object/stimulus category. Distinct fingerprints could be identified, with lower frequency patterns (<45Hz) dominating in the anterior semantic object processing network and evolving later, during perceptual decision phases, than early sensory posterior patterns (60-250Hz). This suggests that accurate object recognition/perceptual decision-making is related to distinct spatiotemporal oscillatory signatures in the low gamma range.
Accessibility: Document exists in file
Language:
eng
Author:
Castelhano, J.
Secondary author(s):
Duarte, I., Abuhaiba, S., Rito, M., Sales, F., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Castelhano, J., Duarte, I., Abuhaiba, S., Rito, M., Sales, F., & Castelo-Branco, M. (2017). Cortical functional topography of high-frequency oscillations. Abstract book of the 7th Iberian Congress on Perception (p. 27). Coimbra, Portugal.
Indexed document: No
Keywords: Perception / Decision

Cortical functional topography of high-frequency oscillations

Cortical functional topography of high-frequency oscillations
DocumentOlfactory decision-making under high uncertainty levels: an fMRI study2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2012
Location: SEC PCA
Title:
2012 Grants
Start date: 2013-02

Reference code: PT/FB/BL-2012-132
Location: Arquivo PCA - Pasta 11/2012
Title:
132 - A direct test of the binding by synchrony hypothesis in humans: the neural correlates of coherent object perception
Duration: 2013-11 - 2016-01
Researcher(s):
Miguel Castelo-Branco, Maria Ribeiro, João Duarte, Gabriel Costa
Institution(s): IBILI, Faculdade de Medicina, Universidade de Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress reports
Final report
Article
Language: eng
Author:
Castelo-Branco, M.
Secondary author(s):
Ribeiro, M., Duarte, J., Costa, G.
Number of reproductions:
1
Keywords:
Psychophysiology / Cognitive processes / Perception / Brain structure and function

Reference code: PT/FB/BL-2012-132.16
Location: Arquivo PCA - Pasta 11/2012
Title:
Olfactory decision-making under high uncertainty levels: an fMRI study
Publication year: 2017
URL:
https://www.uc.pt/en/icnas/CIP2017/CIP2017_programme/CIP2017_abstractBook
Abstract/Results: ABSTRACT:
Olfactory decision-making plays an important role in chemical cue detection, signaling potential predators, and/or presence of venoms, which is crucial for survival. However, and regardless the advances concerning perceptual decision making in other sensory modalities, little is known concerning olfactory decisionmaking in humans, in particular when perceptual uncertainty is high. In this work, we addressed olfactory decision-making under high levels of uncertainty and distinct levels of decision confidence; we aimed to understand the decision-making circuitry based on simple olfactory detection and binary decision using functional magnetic resonance imaging.
Thus, we have used an olfactory paradigm using phenylethyl alcohol, a pure olfactory stimulus, with a block design under fMRI. Different concentrations of phenylethyl alcohol were used and the participants (n=20) were asked to classify each stimulus based on detection and to report their confidence level. Our experimental design allowed to separate levels of odor intensity from levels of detection and confidence.
Behavioral results reveal high level of uncertainty either for detection or for confidence, in spite of participants being above chance level. Concerning functional outcomes, our results identify, as expected, that primary and early olfactory pathways
(primary olfactory cortex, putamen and amygdala) are activated by detection (maximum PEA concentration vs minimum PEA concentration, t>2.17, p=0.03) as well as confidence (maximum confidence versus minimum confidence, t>2.33, p=0.02) analysis. Importantly, higher confidence levels related to higher recruitment of regions responsible for the evaluation of the reward-value and olfactory hedonic memory such as anterior cingulate cortex, medial frontal gyrus, thalamus, insula and hippocampus. These regions are activated only when confidence is tested.
These results show independent patterns of activation of the olfactory and decision making networks, as determined by differences of concentration or confidence levels. High confidence led to activation of circuits related to hedonic pleasure, irrespective of detection.
Accessibility: Document exists in file
Language:
eng
Author:
Rebelo, D.
Secondary author(s):
Duarte, I. C., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Rebelo, D., Duarte, I. C., & Castelo-Branco, M. (2017). Olfactory decision-making under high uncertainty levels: an fMRI study. Abstract book of the 7th Iberian Congress on Perception (p. 23). Coimbra, Portugal.
Indexed document: No
Keywords: Perception / Functional magnetic resonance imaging (fMRI)

Olfactory decision-making under high uncertainty levels: an fMRI study

Olfactory decision-making under high uncertainty levels: an fMRI study
DocumentHigh-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.11
Location: BF-GMS
Title:
High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli
Publication year: 2017
URL:
https://www.uc.pt/en/icnas/CIP2017/CIP2017_programme/CIP2017_abstractBook
Abstract/Results: ABSTRACT:
During continuous observation of a bistable moving stimulus, visual perception may alternate between competing interpretations, switching over time between alternative percepts. In bistability resulting from e.g. plaid stimuli, the question of how the visual system integrates global patterns of motion from its components becomes particularly salient. Here, we aimed to study the role of the human motion complex (hMT+), known to be involved in motion perception and to underlie the perceptual
binding of moving surfaces, in the integration of visual motion information across brain hemispheres.
We used a previously described bistable moving stimulus with non-overlapping 1D components presented to each hemisphere thereby requiring long-range integration. Accordingly, motion coherence requires interhemispheric binding and incoherence interhemispheric segregation. We took advantage of high-resolution 7 Tesla (7T) functional Magnetic Resonance Imaging (fMRI) to explore the relation between the hMT+ spatial and temporal activity patterns and bistable perception. fMRI data from 10 healthy participants were acquired and analyzed offline. The interhemispheric correlation of the bilateral hMT+ activity and its association with the perceptual states was estimated. Additionally, we investigated hMT+ functional sub-domains responding preferentially for each type of motion percept (coherent or incoherent) and tested whether these domains have different preference for axes of motion.
We found evidence for the existence of hMT+ perceptual sub-domains, which have shown preferred axes of motion matching the motion direction of the perceptual reports. Moreover, our results suggest that hMT+ has a functional role in integrating interhemispheric representations of bistable percepts. We found a close relation between the hMT+ interhemispheric functional connectivity and the perceptual switches involving differential long-range integration of visual moving stimuli.
Accessibility: Document exists in file
Language:
eng
Author:
Sousa, T.
Secondary author(s):
Duarte, J., Costa, G., Kemper, V., Martins, R., Goebel, R., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Sousa, T., Duarte, J., Costa, G., Kemper, V., Martins, R., Goebel, R., & Castelo-Branco, M. (2017). High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli. Abstract book of the 7th Iberian Congress on Perception (p. 31). Coimbra, Portugal.
Indexed document: No
Keywords: Functional magnetic resonance imaging (fMRI) / Visual motion / Bistability / Perception

High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli

High-resolution 7T fMRI data on the perceptual long-range segregation vs. integration of bistable moving stimuli
DocumentBeta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.12
Location: BF-GMS
Title:
Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?
Publication year: 2017
URL:
https://www.uc.pt/en/icnas/CIP2017/CIP2017_programme/CIP2017_abstractBook
Abstract/Results: ABSTRACT:
In vision, perceptual features are processed in several regions distributed across the brain, owing to the specialization of visual areas. How the brain seamlessly achieves a coherent perception of visual scenes and objects through integration of these is currently unknown. We studied perception requiring visual integration/binding under ambiguous and unambiguous conditions. While observing an ambiguous moving stimulus that could be perceived in either a “bound” (one integrated surface) or an “unbound” (two objects separated, one in each hemifield) configuration (Wallach, 1935), participants reported their perception and EEG was recorded. Ambiguous stimuli challenges perception as the brain has to decide between valid but incompatible interpretations under physically constant stimulation. The distinct visual experiences were highly skewed toward a bound perception, but inevitably transitioned to a state of bistability. The bound percept correlated with differences in power, particularly at the beta frequency range (12-23 Hz), but not with synchrony in the gamma range, as initially expected. Beta oscillations have been found to play a role in perception, with conflicting reports on its role in the integration of visual information (Aissani, 2014; Zaretskaya, 2015). Changes in beta power accompanying perceptual switches allowed for a trial-by-trial classification of perceptual states under ambiguous conditions, but not for unambiguous setttings. Thus, visual experience can be identified by differences in oscillatory activity under conditions of ambiguity. When visual binding was achieved under ambiguity, resulting in a bound percept, beta oscillations were increased when visual binding was achieved, compared to the unbound perception. Nonetheless, when bound perception resulted from an unambiguous stimulus this difference was not found. This suggests that beta oscillations might not be conveying a mechanism of binding but is signalling a bias in perception, towards a more likely configuration under conflict.
Accessibility: Document exists in file
Language:
eng
Author:
Costa, G.
Secondary author(s):
Duarte, J., Martins, R., Wibral, M., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Costa, G., Duarte, J., Martins, R., Wibral, M., & Castelo-Branco, M. (2017). Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias? Abstract book of the 7th Iberian Congress on Perception (p. 33). Coimbra, Portugal.
Indexed document: No
Keywords: Visual binding / Perception

Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?

Beta oscillations during motion integration and segmentation: evidence of binding or perceptual bias?
DocumentThe perceptual integration of visual motion revealed by hMT+ interhemispheric connectivity: a 7 Tesla study2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.13
Location: BF-GMS
Title:
The perceptual integration of visual motion revealed by hMT+ interhemispheric connectivity: a 7 Tesla study
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
The mechanism by which human vision segments and binds stimulus' features to produce a coherent percept is still not well-understood (Treisman, 1996; Burwick, 2014). Perceptual interpretation of ambiguous moving stimuli, for which perception alternates between competing interpretations in conditions of identical sensory input, raises the question of how the visual system integrates global patterns of motion from its components (Leopold and Logothetis, 1999; Sterzer et al., 2009). The human motion complex (hMT+) is well known to be involved in motion perception (Tootell et al., 1995; Kolster et al., 2010) and has been shown to underlie the perceptual binding of overlapping moving surfaces (Castelo-Branco et al., 2002). However, its role in interhemispheric integration of visual motion information was only explored with apparent motion paradigms (Sterzer et al., 2003; Muckli et al., 2005; Rose and Buechel, 2005; Genç et al., 2011). Here we aimed to investigate how perceptual visual motion integration vs. segregation of interhemispheric non-overlapping 1D directional cues is modulated by interhemispheric functional connectivity. A previously described ambiguous moving stimulus (Wallach, 1935; Wuerger et al., 1996), which can be perceived as a coherent pattern comprehending both visual hemi-fields or as two separate non-overlapping component surfaces (one in each visual hemi-field), was used. Data from nine healthy participants were acquired using high-resolution functional magnetic resonance imaging (fMRI) at 7T and analyzed offline to estimate the variation of hMT+ interhemispheric correlation in time. We found that hMT+ interhemispheric correlation changes in time depending on whether participants integrate all motion features into the percept of a single coherent pattern or whether they segregate visual motion features and perceive two separate surfaces. We present the first fMRI-based evidence of a close relation between interhemispheric functional connectivity in hMT+ regions and the perceptual switches involving differential long-range integration of visual moving stimuli.
Accessibility: Document does not exist in file
Language:
eng
Author:
Sousa, T.
Secondary author(s):
Duarte, J., Costa, G., Kemper, V., Martins, R. , Goebel, R., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Sousa, T., Duarte, J., Costa, G., Kemper, V., Martins, R., Goebel, R., & Castelo-Branco, M. (2017, August). The perceptual integration of visual motion revealed by hMT+ interhemispheric connectivity: a 7 Tesla study. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Perception / Visual motion / Functional magnetic resonance imaging (fMRI)
DocumentLong-range interhemispheric binding of bistable surface motion reflects bottom-up processes generated within hMT+2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.14
Location: BF-GMS
Title:
Long-range interhemispheric binding of bistable surface motion reflects bottom-up processes generated within hMT+
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
Introduction Visual stimuli are ambiguous when observers perceive them as having at least two distinct and spontaneously alternating interpretations. Perceptual interpretation poses particular challenges when motion signals coming from co-existing contours arise from single or multiple objects, as this raises the question of how the visual system integrates global patterns of motion from its components. It remains an open question whether disambiguation of ambiguous surface motion is primarily achieved in early visual cortex or higher-level brain regions. Methods In this fMRI study (n=30) we used a physically constant bistable moving stimulus with non-overlapping components restricted to individual visual hemifields that elicits perception of one coherent object or two separate objects. We studied the role of hMT+ in interhemispheric bistability and the relevance of bottom-up vs top-down modulation in perceptual integration. We also investigated directed functional connectivity (Granger causality) between activated brain areas during bistable motion states. Results We observed a relation between activity in hMT+ and perceptual switches involving interhemispheric segregation/integration of motion, crucially under non-local conditions where components do not overlap. Higher signal changes were found in response to spatially segregated component percepts than to pattern percepts. Maintenance of perceptual stability was associated with bottom-up influences generated within hMT+, as revealed by Granger causality analysis. We observed that directed influences could emerge either from left or right hMT+ during bistable motion integration/segregation. However, we also identified a role for top-down mechanisms in state transitions. Deconvolution analysis of switch-related changes revealed prefrontal, insula and cingulate areas, with a particular role for the right superior parietal lobule. Accordingly, the latter also exhibited significant directed functional connectivity with hMT+, during perceptual state maintenance. Conclusion Our results suggest that long-range interhemispheric binding of ambiguous motion representations reflects bottom-up processes within hMT+ during perceptual state maintenance. In contrast, state transitions maybe influenced by high-level regions such as the SPL.
Accessibility: Document does not exist in file
Language:
eng
Author:
Duarte, J.
Secondary author(s):
Costa, G., Martins, R., Castelo-Branco, M.
Document type:
Abstract book
Number of reproductions:
1
Reference:
Duarte, J., Costa, G., Martins, R., & Castelo-Branco, M. (2017, August). Long-range interhemispheric binding of bistable surface motion reflects bottom-up processes generated within hMT+. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Functional magnetic resonance imaging (fMRI) / High field MR / Perception
DocumentNeural signatures of conscious visual perception: An EEG/ERP Study 2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.15
Location: BF-GMS
Title:
Neural signatures of conscious visual perception: An EEG/ERP Study
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
Introduction: The neural mechanisms subserving visual information processing are fairly well understood, but the ones paving the way to perceptual visual awareness remain controversial. In order to shed light on this debate, we present an EEG/ERP study combining an oddball detection task at perceptual threshold of feature difference with a visual awareness paradigm based on contextual contrast detection. Keeping conditions invariant (target stimulus is sometimes detected and sometimes not), differences in measured activity should reflect specific neuroelectrical processes that correlate with distinct perceptual sates Methods: The study was conducted at IBILI/FMED of the University of Coimbra. 20 healthy volunteers, 9 males and 11 females (18-40YA, mean =30YO; SD=9), participated in the experiment. Differential thresholds for visual change detection were tested for each participant, in a psychophysical staircase task. Reference and comparison Test consisted of reddish-center/gray-surround circular patches, uniformly illuminated by experimentally rendered daylight illuminants. 47 Illuminants parametrically spaced along the daylight locus were tested. Subject adapted Targets at perceptual threshold of illuminant difference (from reference) were chosen for the Oddball EEG task. Data were segmented into epochs from -200ms to 1000ms, time-locked by stimuli category (Target/Standard), and awareness category (Detected/Non-detected), and averaged. Difference waves contrasting stimulus and awareness category were calculated for each participant. Results and conclusions. Processing differences between stimuli reaching awareness or unawareness and their evoked activity, started around 50ms after stimuli onset, with the Non-detected condition surprisingly eliciting significantly different occipital P1 sensory component, from both Standard and Detected condition, at shorter latencies. Electrophysiological differential onset for perceptual visual awareness-dependent processing started about 150ms, with significantly different posterior detection negatives and post perceptual parietal late positivities. This neural profile was not observed for the “unaware†condition. Results suggest that processing of visual features may occur in visual regions even when conditions of change do not reach awareness.
Accessibility: Document does not exist in file
Language:
eng
Author:
Teixeira, M.
Secondary author(s):
Nascimento, S., Almeida, V., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Teixeira, M., Nascimento, S., Almeida, V., & Castelo-Branco, M. (2017, August). Neural signatures of conscious visual perception: An EEG/ERP Study. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Perception / Visual motion
DocumentBeta oscillations reflect perceptual experience under ambiguous stimulation but not in the absence of conflict 2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.17
Location: BF-GMS
Title:
Beta oscillations reflect perceptual experience under ambiguous stimulation but not in the absence of conflict
Publication year: 2017
URL:
http://www.icon2017.org/program.html
Abstract/Results: ABSTRACT:
Introduction: Bistable stimuli allows for the study of cognition and neuronal mechanisms of perceptual decision under physically constant stimulation. In vision, several studies on bistable imagery have found beta oscillations to play a role in perception, be it in the integration of visual information (Aissani, 2014) or in the emergence of illusions (VanRullen, 2006). We studied perception requiring visual integration/binding under ambiguous and unambiguous conditions and correlated brain oscillatory activity with distinct perceptual states. Methods: In the present EEG study (58 channels), participants (n = 23) observed an ambiguous moving stimulus that could be perceived in either a "bound" (one integrated surface) or an "unbound" (two objects separated, one in each hemifield) configuration (Wallach, 1935). Participants reported continuously their perception. The same task was performed when viewing an unambiguous version of the same stimulus. Results: The distinct visual experiences, bound and unbound percepts of the ambiguous stimulus, correlated with differences in power, particularly at the beta frequency range (12-23 Hz). The increase in beta activity was present over several electrodes but most pronounced over parietal electrodes. Moreover, changes in beta power related to perceptual switches allowed for a trial-by-trial classification of the subjects' perceptual state under ambiguous conditions. Nonetheless, this difference in oscillatory activity was not observed in the unambiguous condition. Conclusions: Our findings reveal that visual experience can be identified by differences in oscillatory activity in conditions of ambiguity. In our current paradigm, when visual binding was achieved under ambiguity, resulting in a bound percept, beta oscillations were increased compared to the unbound perception. Nonetheless, when bound perception resulted from an unambiguous stimulus, but physically and perceptually similar, this difference was not found. This suggests that beta oscillations are associated with perception under conflict and play a role in perceptual decision making.
Accessibility: Document does not exist in file
Language:
eng
Author:
Costa, G.
Secondary author(s):
Duarte, J., Martins, R., Castelo-Branco, M.
Document type:
Online abstract
Number of reproductions:
1
Reference:
Costa, G., Duarte, J., Martins, R., Castelo-Branco, M. (2017, August). Beta oscillations reflect perceptual experience under ambiguous stimulation but not in the absence of conflict. Poster presented at the International Conference for Cognitive Neuroscience (ICON), Amsterdam, The Netherlands. Abstract retrieved at http://www.icon2017.org/program.html
Indexed document: No
Keywords: Visual binding / Perception / Bistability
DocumentFinal report - Multimodal mapping of visual motion perceptual decision: Dissecting the role of different motion integration areas in visual surface reconstruction2017

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-373
Location: BF-GMS
Title:
373 - Multimodal Mapping of Visual Motion Perceptual Decision: Dissecting the Role of Different Motion Integration Areas in Visual Surface Reconstruction
Duration: 2016-02 - 2017-10
Researcher(s):
Miguel de Sá e Sousa de Castelo Branco, Gabriel Nascimento Ferreira da Costa, Gilberto Silva, João Valente Duarte, Ricardo Martins
Institution(s): ICNAS - Institute for Nuclear Sciences Applied to Health, Coimbra, Portugal; IBILI - Institute for Biomedical Imaging and Life Sciences, Coimbra (Portugal)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Author: Castelo-Branco, M.
Secondary author(s):
Costa, G., Silva, G., Duarte, J., Martins, R.
Number of reproductions:
1
Keywords:
Motion perception / Decision-making / Perceptual Ambiguity / Decision Models / Psychophysiology

Reference code: PT/FB/BL-2014-373.01
Location: BF-GMS
Title:
Final report - Multimodal mapping of visual motion perceptual decision: Dissecting the role of different motion integration areas in visual surface reconstruction
Publication year: 2017
URL:
https://www.bial.com/imagem/Grant_37314.pdf
Abstract/Results: ABSTRACT:
BACKGROUND
Neural models of perceptual decision are often studied using bistable perceptual decision paradigms. Causal bottom vs top-down mechanisms remain to be elucidated.
AIMS
We asked whether hMT+ is pivotal for perceptual integration of motion signals in terms of bottom-up vs top-down interactions. Moreover, if middle temporal cortex (hMT+) is indeed a causal hub in the decision-making network, then it should also provide long range integration at the interhemispheric level, which is a testable prediction. We tested whether one can find fingerprints of perception related to neural coherence. Finally, we aimed to elucidate the general relation between sensory and decision modules within saliency and frontoparietal networks.
METHOD
We combined EEG and fMRI methods, to understand perceptual decision mechanisms, their neural correlates and functional connectivity (with a focus on interhemispheric interactions).
RESULTS
We found out that human hMT+ is a causal hub which contributes to maintain perceptual representations when other competing percepts are available for cognition. We further confirmed the prediction that it should also subserve long range perceptual integration, through increased interhemispheric connectivity between left/right hMT+. EEG data revealed that bound perceptual interpretations relate with parietal beta power under ambiguous conditions. Together with our findings using other decision paradigms inside and outside the visual domain, we showed a modular architecture of perceptual decision-making network.
CONCLUSION
Our work provides a clear-cut functional segregation at different time scales between sensory representations, and the role of the general decision modules within saliency and frontoparietal networks.
Accessibility: Document exists in file
Language:
eng
Author:
Castelo-Branco, M.
Document type:
Final report
Number of reproductions:
1
Indexed document:
No
Keywords: Perception / Decision-making / Electroencephalogram (EEG) / Functional magnetic resonance imaging (fMRI) / Granger causality analysis / Visual motion / Bistability

Final report - Multimodal mapping of visual motion perceptual decision: Dissecting the role of different motion integration areas in visual surface reconstruction

Final report - Multimodal mapping of visual motion perceptual decision: Dissecting the role of different motion integration areas in visual surface reconstruction
DocumentEffects of transcranial magnetic stimulation on body perception: No evidence for specificity of the right temporo-parietal junction2016

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2008
Location: Arquivo PCA - Pastas 1 a
Title:
2008 Grants
Start date: 2009-01

Reference code: PT/FB/BL-2008-054
Location: Arquivo PCA - Pasta 3/2008
Title:
054 - Brain activity during remote information access
Duration: 2009-10 - 2011-06
Researcher(s):
Jérôme Daltrozzo, Boris Kotchoubey, Ahmed A. Karim
Institution(s): Institute of Medical Psychology and Behavioral Neurobiology, Eberhard-Karls-University, Tübingen (Germany)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress reports
Final report
Articles
Language: eng
Author:
Daltrozzo, J.
Secondary author(s):
Kotchoubey, B., Karim, A. A.
Number of reproductions:
1
Keywords:
Psychophysiology / Out-of-body experience (OBE) / Brain structure and function / Sleep and dreams / Body awareness

Reference code: PT/FB/BL-2008-054.09
Location: Arquivo PCA - Pasta 3/2008
Title:
Effects of transcranial magnetic stimulation on body perception: No evidence for specificity of the right temporo-parietal junction
Publication year: 2016
URL:
https://link.springer.com/article/10.1007%2Fs10548-016-0496-0
Abstract/Results: ABSTRACT:
Previous data suggest that the right temporo-parietal junction (rTPJ) may have a specific role in abnormal body perception (ABP), including out-of-body experience. We tested this hypothesis with inhibitory (1 Hz) and excitatory (15 Hz) repetitive transcranial magnetic stimulation (rTMS) of the rTPJ and a control site (CS, 5 cm posterior to the rTPJ along the lateral sulcus direction in Brodmann area 19R) in 35 healthy adults. ABP frequency was higher with 1 Hz than with 15 Hz rTMS but unaffected by the rTMS site (rTPJ/CS). Response to an own-body transformation task were delayed with 1 Hz compared to 15 Hz rTMS but also unaffected by rTMS site. ABP from rTMS at both sites induced electroencephalographic power decrease in all frequencies at left anterior and central cortical sites. Our data suggest that inhibitory rTMS can lead to ABP. However, the rTPJ may not play a specific role in this process.
Accessibility: Document does not exists in file
Language:
eng
Author:
Daltrozzo, J.
Secondary author(s):
Kotchoubey, B., Gueler, F., Karim, A. A.
Document type:
Article
Number of reproductions:
1
Reference:
Daltrozzo, J., Kotchoubey, B., Gueler, F., & Karim, A. A. (2016). Effects of transcranial magnetic stimulation on body perception: No evidence for specificity of the right temporo-parietal junction. Brain Topography, 29(5), 704-715. https://doi.org/10.1007/s10548-016-0496-0
2-year Impact Factor: 3.394|2016
Times cited: 6|2025-09-16
Indexed document: Yes
Quartile: Q2
Keywords: Electroencephalogram (EEG) / Perception / Somatosensory processing / Transcranial magnetic stimulation / Vestibular system

DocumentA comparative study of rhythm perception in preterm and term children2018

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-304
Location: BF-GMS
Title:
304 - The impact of music training on reading and mathematical abilities of normal and reading disabled children: a behavioral and neuroimaging longitudinal study
Duration: 2015-10 - 2019-09
Researcher(s):
Maria de São Luís Vasconcelos da Fonseca e Castro Schöner, Christian Gaser, Daniela da Costa Coimbra, Marta Sofia Pinto Martins
Institution(s): Faculty of Psychology and Educational Sciences at University of Porto, FPCEUP / Centre for Psychology at University of Porto (Portugal); Structural Brain Mapping Group/ Department of Psychiatry - Jena University Hospital (Germany)
Contents: Contents:
Application form
Correspondence
Progress report
Final report
Articles
Language: eng
Author:
Castro, S. L.
Secondary author(s):
Gaser, C., Coimbra, D., Martins, M.
Number of reproductions:
1
Keywords:
Longitudinal study / Music training / Reading and mathematical abilities / Brain morphometry / Psychophysiology

Reference code: PT/FB/BL-2014-304.10
Location: BF-GMS
Title:
A comparative study of rhythm perception in preterm and term children
Publication year: 2018
URL:
https://www.researchgate.net/profile/Marta_Martins8/publication/327283032_A_comparative_study_of_rhythm_perception_in_preterm_and_term_children/links/5b8681a64585151fd1397d10/A-comparative-study-of-rhythm-perception-in-preterm-and-term-children.pdf
Abstract/Results: ABSTRACT:
Sensitivity to rhythm is an important aspect of human development. However, despite growing research on developmental aspects of rhythm, the potential impact of gestational age on rhythm processing remains unexplored. We compared preterm and term children on rhythm perception in music under three conditions of stimulus complexity: rhythmical sequences in unpitched timbres (unpitched), in fixed pitch tones (constant pitch), or in tones of variable pitch (variable pitch contour). Twenty-one preterm children (9.89 ± 2.30 years; 10 girls) were individually matched in age and sex to term children (9.89 ± 2.34; 10 girls) and asked to judge whether the rhythm of a pair of sequences sounded same or different. In the unpitched condition, there were no between-group differences. However, term children performed significantly better than preterm children in the sequences with variable pitch contour (results on fixed pitch were intermediate). These results suggest that prematurity may impact on rhythm processing under more demanding conditions of stimulus complexity.
Accessibility: Document exists in file
Language:
eng
Author:
Martins, M.
Secondary author(s):
Neves, L., Rodrigues, P., Vasconcelos, O., Castro, S. L.
Document type:
Book chapter
Number of reproductions:
1
Reference:
Martins, M., Neves, L., Rodrigues, P., Vasconcelos, O., & Castro, S. L. (2018). A comparative study of rhythm perception in preterm and term children. In L. P. Rodrigues, F. M. & Clemente, R. Lima (Eds.), 10 Estudos em Desenvolvimento Motor da Criança (pp. 53-63). Melgaço, Portugal: Escola Superior de Desporto e Lazer - Instituto Poltécnico de Viana do Castelo
Indexed document: No
Keywords: Rhythm / Perception / Preterm / Children / Development
DocumentFinal report - Neural oscillations underlie individual differences in brightness perception2019

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2014
Location: BF-GMS
Title:
2014 Grants
Start date: 2015-01

Reference code: PT/FB/BL-2014-535
Location: BF-GMS
Title:
535 - Neural oscillations underlie individual differences in brightness perception
Duration: 2015-11 - 2021-07
Researcher(s):
James Stuart Peter Macdonald
Institution(s): University of Roehampton, London (UK)
Contents: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Final report
Language: eng
Author:
MacDonald, J. S. P.
Number of reproductions:
1
Keywords:
Vision / Perception / Brightness / Oscillation / Psychophysiology

Reference code: PT/FB/BL-2014-535.01
Location: BF-GMS
Title:
Final report - Neural oscillations underlie individual differences in brightness perception
Publication year: 2019
URL:
https://www.bial.com/media/3762/neural-oscillations-underlie-individual-differences-in-brightness-perception.pdf
Abstract/Results: ABSTRACT:
EEG recordings of human occipital alpha-band oscillations have been strongly linked to visual perception. In particular, cortical excitability is increased in areas exhibiting low alpha amplitude. Although the frequency of alpha oscillations varies significantly between individuals, it has only rarely been studied as an independent factor in shaping perception. Temporal integration of successive stimuli has recently been shown to depend on individual alpha oscillation frequency, with faster frequencies resulting in finer temporal resolution in perception. This suggests that perception may qualitatively differ between individuals with different spontaneous alpha frequencies. Moreover, underlying the differences in temporal resolution may be a more basic visual process: differences in sensitivity to visual flicker. We tested this hypothesis by correlating performance in a flicker detection task with the speed of individual alpha rhythms. For each participant, we obtained temporal contrast sensitivity functions and related the stimulus frequency at peak sensitivity to individual alpha frequency. Our results demonstrate that individual alpha frequency predicts contrast sensitivity to visual flicker. Individuals with faster spontaneous alpha rhythms were maximally sensitive at faster stimulus flicker frequencies. Importantly, such individuals performed worse at slower stimulus frequencies than those with naturally slower alpha rhythms. This suggests that individual alpha frequency specifically predicts the stimulus flicker frequency which produces maximum contrast sensitivity. The findings provide evidence for a link between alpha frequency and individual differences in basic, low-level visual perception.
Accessibility: Document exists in file
Language:
eng
Author:
MacDonald, J.
Document type:
Final report
Number of reproductions:
1
Reference:
MacDonald, J. (2019). Final report - Neural oscillations underlie individual differences in brightness perception.
Indexed document: No
Keywords: Electroencephalogram (EEG) / Oscillations / Alpha / Visual / Perception

Final report - Neural oscillations underlie individual differences in brightness perception

Final report - Neural oscillations underlie individual differences in brightness perception
DocumentNeurophenomenology of near-death experience memory in hypnotic recall: a within-subject EEG study2019

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
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Accessibility: By permission

Reference code: NDE
Location: Arquivo PCA - Pasta 1/Outros Apoios
Title:
Characterization of “Near-Death Experiences” through the comparison of experiencers and non-experiencers’ particularities: inter-individual differences in cognitive characteristics and susceptibility to false memories
Duration: 2016-03 - 2019-03
Researcher(s):
Steven Laureys, Charlotte Martial, Vanessa Charland-Verville, Héléna Cassol
Institution(s): Coma Science Group, University of Liège (Belgium)
Contents: Application
Research Funding Agreement
Progress report
Final report
Articles
Language: eng
Author:
Laureys, S.
Number of reproductions:
3
Keywords:
Parapsychology and Psychophysiology / Near-death experience / Functional magnetic resonance imaging (fMRI)

Reference code: NDE-51
Location: Arquivo PCA - Pasta 1/Outros Apoios
Title:
Neurophenomenology of near-death experience memory in hypnotic recall: a within-subject EEG study
Publication year: 2019
URL:
https://www.nature.com/articles/s41598-019-50601-6
Abstract/Results: ABSTRACT:
The neurobiological basis of near-death experiences (NDEs) is unknown, but a few studies attempted to investigate it by reproducing in laboratory settings phenomenological experiences that seem to closely resemble NDEs. So far, no study has induced NDE-like features via hypnotic modulation while simultaneously measuring changes in brain activity using high-density EEG. Five volunteers who previously had experienced a pleasant NDE were invited to re-experience the NDE memory and another pleasant autobiographical memory (dating to the same time period), in normal consciousness and with hypnosis. We compared the hypnosis-induced subjective experience with the one of the genuine experience memory. Continuous high-density EEG was recorded throughout. At a phenomenological level, we succeeded in recreating NDE-like features without any adverse effects. Absorption and dissociation levels were reported as higher during all hypnosis conditions as compared to normal consciousness conditions, suggesting that our hypnosis-based protocol increased the felt subjective experience in the recall of both memories. The recall of a NDE phenomenology was related to an increase of alpha activity in frontal and posterior regions. This study provides a proof-of-concept methodology for studying the phenomenon, enabling to prospectively explore the NDE-like features and associated EEG changes in controlled settings.
Accessibility: Document exists in file
Language:
eng
Author:
Martial, C.
Secondary author(s):
Mensen, A., Charland-Verville, V., Vanhaudenhuyse, A., Rentmeister, D., Ali Bahri, M., Cassol, H., Englebert, J., Gosseries, O., Laureys, S., Faymonville, M-E.
Document type:
Article
Number of reproductions:
3
Reference:
Martial, C., Mensen, A., Charland-Verville, V., Vanhaudenhuyse, A., Rentmeister, D., Ali Bahri, M., Cassol, H., Englebert, J., Gosseries, O., Laureys, S., & Faymonville, M-E. (2019). Neurophenomenology of near-death experience memory in hypnotic recall: a within-subject EEG study. Scientific Reports, 9: 14047. https://doi.org/10.1038/s41598-019-50601-6
2-year Impact Factor: 3.998|2019
Times cited: 21|2025-09-17
Indexed document: Yes
Quartile: Q1
Keywords: Consciousness / Perception

Neurophenomenology of near-death experience memory in hypnotic recall: a within-subject EEG study

Neurophenomenology of near-death experience memory in hypnotic recall: a within-subject EEG study