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BIAL Foundation
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TI:"Behavioral and electrophysiological effects of network-based frontoparietal tDCS in patients with severe brain injury: A randomized controlled trial"
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DocumentBehavioral and electrophysiological effects of network-based frontoparietal tDCS in patients with severe brain injury: A randomized controlled trial2020

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: 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, 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-67
Location: Arquivo PCA - Pasta 1/Outros Apoios
Title:
Behavioral and electrophysiological effects of network-based frontoparietal tDCS in patients with severe brain injury: A randomized controlled trial
Publication year: 2020
URL:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7511767/
Abstract/Results: ABSTRACT:
BACKGROUND
Transcranial direct current stimulation (tDCS) may promote the recovery of severely brain-injured patients with disorders of consciousness (DOC). Prior tDCS studies targeted single brain regions rather than brain networks critical for consciousness recovery.
OBJECTIVE
Investigate the behavioral and electrophysiological effects of multifocal tDCS applied over the frontoparietal external awareness network in patients with chronic acquired DOC.
METHODS
Forty-six patients were included in this randomized double-blind sham-controlled crossover trial (median [interquartile range]: 46 [35 - 59] years old; 12 [5 - 47] months post injury; 17 unresponsive wakefulness syndrome, 23 minimally conscious state (MCS) and 6 emerged from the MCS). Multifocal tDCS was applied for 20 min using 4 anodes and 4 cathodes with 1 mA per electrode. Coma Recovery Scale-Revised (CRS-R) assessment and 10 min of resting state electroencephalogram (EEG) recordings were acquired before and after the active and sham sessions.
RESULTS
At the group level, there was no tDCS behavioral treatment effect. However, following active tDCS, the EEG complexity significantly increased in low frequency bands (1-8 Hz). CRS-R total score improvement was associated with decreased baseline complexity in those bands. At the individual level, after active tDCS, new behaviors consistent with conscious awareness emerged in 5 patients. Conversely, 3 patients lost behaviors consistent with conscious awareness.
CONCLUSION
The behavioral effect of multifocal frontoparietal tDCS varies across patients with DOC. Electrophysiological changes were observed in low frequency bands but not translated into behavioral changes at the group level.
Accessibility: Document exists in file
Language:
eng
Author:
Martens, G.
Secondary author(s):
Kroupi, E., Bodien, Y., Frasso, G., Annen, J., Cassol, H., Barra, A., Martial, C., Gosseries, O., Lejeune, N., Soria-Frisch, A., Ruffini, G., Laureys, S., Thibaut, A.
Document type:
Article
Number of reproductions:
3
Reference:
Martens, G., Kroupi, E., Bodien, Y., Frasso, G., Annen, J., Cassol, H., Barra, A., ... Thibaut, A. (2020). Behavioral and electrophysiological effects of network-based frontoparietal tDCS in patients with severe brain injury: A randomized controlled trial. NeuroImage: Clinical, 28: 102426. https://doi.org/10.1016/j.nicl.2020.102426
2-year Impact Factor: 4.881|2020
Times cited: 31|2025-09-20
Indexed document: Yes
Quartile: Q2
Keywords: TDCS / Network / Minimally conscious state / Unresponsive wakefulness syndrome / EEG / Consciousness

Behavioral and electrophysiological effects of network-based frontoparietal tDCS in patients with severe brain injury: A randomized controlled trial

Behavioral and electrophysiological effects of network-based frontoparietal tDCS in patients with severe brain injury: A randomized controlled trial