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DE:"Brain states"
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DocumentActive intracerebral areas (EEG LORETA) in non-meditators and experienced meditators differ during resting2009

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-2006
Location: Arquivo PCA - Pastas 1 a 22 /2006
Title:
2006 Grants
Start date: 2007-01 - 2013-11
Dimension/support:
22 caixas de arquivo

Reference code: PT/FB/BL-2006-044
Location: Arquivo PCA - Pasta 19/2006
Title:
044 - Brain electric activity in meditation: Extension of earlier work and hypothesis testing
Duration: 2007-10 - 2010-01
Researcher(s):
Dietrich Lehmann, Shisei Tei, Pascal Faber, Hiraoki Kumano, Lorena Gianotti, Roberto Pascual-Marqui
Institution(s): The KEY Institute for Brain-Mind Research, University Hospital of Psychiatry, Zurich (Switzerland)
Contents: Contents:
Bursary agreement
Application form
Correspondence
Financial report and expenditure documents
Progress report
Final report
8 Articles (published or submitted)
14 Posters
Language: eng
Author:
Lehmann, D.
Secondary author(s):
Tei, S., Faber, P., Kumano, H., Gianotti, L., Pascual-Marqui, R.
Number of reproductions:
1
Keywords:
Psychophysiology / Brain structure and function / Altered states of consciousness / Meditation

Reference code: PT/FB/BL-2006-044.07
Location: Arquivo PCA - Pasta 19/2006
Title:
Active intracerebral areas (EEG LORETA) in non-meditators and experienced meditators differ during resting
Publication year: 2009
URL:
http://www.med.uni-giessen.de/physio/Kognitive_Neurophysiologie_2009_2_1.pdf
Abstract/Results: ABSTRACT:
Do experienced meditators and meditation-naïve people have different brain functional states during no-task resting 19 channel EEG was recorded (versus average reference) from 8 QiGong meditators with 3. 30 years experience (mean 11.5+/-8.8) and 9 meditation-naïve controls (mean ages 41+/- 10 years (3 males), and 37+/-6 years (3 males), respectively) during eyes closed rest (sitting; meditators did not meditate). All artifact-free 2-second EEG epochs (mean 33.9+/-8.5/subject) were recomputed into intracortical 3 dimensional generator distributions using LORETA (2394 voxels) for each subject and each of the 8 EEG frequency bands. Results were normalized per frequency band and subject (total current density across all LORETA voxels scaled to 1). Current density of all voxels was tested (t tests) for differences between groups for each frequency band. An exceedance proportion test correcting for multiple testing identified voxels at p<0.05. Only differences in delta frequency band (1.5-6 Hz) were significant (355 voxels): 229 were stronger, 126 weaker in meditators than controls. All but 4 stronger voxels were in anterior areas (BA 9, 10, 11, 44, 45, 46, 47), 81 of them left, 144 right; all weaker voxels were in central-posterior areas (BA 4, 6, 7, 18, 19, 22, 30, 31, 32, 37, 39, 40), 107 of them left, 19 right. - In sum: during task-free resting, experienced meditators had different brain states compared to non-meditators. Meditators had stronger delta EEG activity than non meditators in frontal cortex (64% right hemisphere voxels), and weaker delta activity in central-posterior cortex (85% left hemisphere voxels). In view of the general assumption that EEG delta activity represents inhibition, experienced meditators have stronger inhibitory activity than controls anterior right-preponderant, and less inhibitory activity central-posterior predominantly left. These results suggest that meditators reduce internal information processing while enhancing input and output processing, an interpretation that agrees with the meditators’ subjective experience of disengaging from perceived information. (Partial support by Bial Grant No. 44 2006/2007.)
Accessibility: Document exists in file (poster)
Copyright/Reproduction:
By permission
Language:
eng
Notes:
Abstract and respective poster in attachment
Author: Faber, P.
Secondary author(s):
Tei, S., Lehmann, D., Gianotti, L., Tsujiuchi, T., Kumano, H., Kochi, K.
Document type:
Abstract
Number of reproductions:
1
Reference:
Faber, P., Tei, S., Lehmann, D., Gianotti, L., Tsujiuchi, T., Kumano, H., & Kochi, K. (2009). Active intracerebral areas (EEG LORETA) in non-meditators and experienced meditators differ during resting. Kognitive Neurophysiologie des Menschen/ Human Cognitive Neurophysiology, 2(1), 9-10.
Indexed document: No
Keywords: Meditation / Qigong / Resting / LORETA / Electroencephalogram (EEG) / Brain states

Active intracerebral areas (EEG LORETA) in non-meditators and experienced meditators differ during resting

Active intracerebral areas (EEG LORETA) in non-meditators and experienced meditators differ during resting
File080 - Mindfulness meditation state and trait through the eyes of brain computational modelling2021-10

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-2020
Location: BF-GMS
Title:
2020 Grants
Start date: 2021-01

Reference code: PT/FB/BL-2020-080
Location: BF-GMS
Title:
080 - Mindfulness meditation state and trait through the eyes of brain computational modelling
Duration: 2021-10
Researcher(s):
Laura Marzetti
Institution(s): Department of Neurosciences, Imaging and Clinical Sciences, Università degli Studi "G. d'Annunzio" Chieti - Pescara (Italy)
Abstract/Results: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Articles
Language: eng
Notes:
Ongoing project
Author: Marzetti, L.
Number of reproductions:
3
Keywords:
Meditation / Brain states / Computational modelling / Neuroimaging / Psychophysiology and Parapsychology
DocumentAstrocyte regulation of neural circuit activity and network states2022

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-2018
Location: BF-GMS
Title:
2018 Grants
Start date: 2019-01

Reference code: PT/FB/BL-2018-037
Location: BF-GMS
Title:
037 - Decoding the neuron-astrocyte dialogue that supports cognitive processing
Duration: 2020-02 - 2024-04
Researcher(s):
João Filipe Oliveira, Luísa Pinto, Diana Nascimento, Sónia Gomes, Inês Caetano, João Viana
Institution(s): Life and Health Sciences Research Institute - ICVS, Universidade do Minho, Braga (Portugal)
Contents: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Final report
Articles
Language: eng
Author:
Oliveira, J. F.
Secondary author(s):
Pinto, L., Nascimento, D., Gomes, S., Caetano, I., Viana, J.
Number of reproductions:
1
Keywords:
Astrocyte / Neural oscillations / Learning and memory / Hippocampus / Psychophysiology

Reference code: PT/FB/BL-2018-037.09
Location: BF-GMS
Title:
Astrocyte regulation of neural circuit activity and network states
Publication year: 2022
URL:
https://onlinelibrary.wiley.com/doi/10.1002/glia.24178
Abstract/Results: Astrocytes are known to influence neuronal activity through different mechanisms, including the homeostatic control of extracellular levels of ions and neurotransmitters and the exchange of signaling molecules that regulate synaptic formation, structure, and function. While a great effort done in the past has defined many molecular mechanisms and cellular processes involved in astrocyte-neuron interactions at the cellular level, the consequences of these interactions at the network level in vivo have only relatively recently been identified. This review describes and discusses recent findings on the regulatory effects of astrocytes on the activity of neuronal networks in vivo. Accumulating but still limited, evidence indicates that astrocytes regulate neuronal network rhythmic activity and synchronization as well as brain states. These studies demonstrate a critical contribution of astrocytes to brain activity and are paving the way for a more thorough understanding of the cellular bases of brain function.
Accessibility: Document does not exist in file
Language:
eng
Author:
Oliveira, J. F.
Secondary author(s):
Araque, A.
Document type:
Article
Number of reproductions:
1
Reference:
Oliveira, J. F. & Araque, A. (2022). Astrocyte regulation of neural circuit activity and network states. Glia, 70(8), 1455-1466. https://doi.org/10.1002/glia.24178
2-year Impact Factor: 6.200|2022
Times cited: 48|2025-02-17
Indexed document: Yes
Quartile: Q1
Keywords: Astrocyte-neuron signaling / Astrocytes / Brain states / Neural network activity / Neuronal synchronization / Tripartite synapses
DocumentBrain state identification and neuromodulation to promote recovery of consciousness2024

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, 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-142
Location: BF-GMS
Title:
Brain state identification and neuromodulation to promote recovery of consciousness
Publication year: 2024
URL:
https://doi.org/10.1093/braincomms/fcae362
Abstract/Results: ABSTRACT:
Experimental and clinical studies of consciousness identify brain states (i.e. quasi-stable functional cerebral organization) in a non-systematic manner and largely independent of the research into brain state modulation. In this narrative review, we synthesize advances in the identification of brain states associated with consciousness in animal models and physiological (sleep), pharmacological (anaesthesia) and pathological (disorders of consciousness) states of altered consciousness in humans. We show that in reduced consciousness the frequencies in which the brain operates are slowed down and that the pattern of functional communication is sparser, less efficient, and less complex. The results also highlight damaged resting-state networks, in particular the default mode network, decreased connectivity in long-range connections and especially in the thalamocortical loops. Next, we show that therapeutic approaches to treat disorders of consciousness, through pharmacology (e.g. amantadine, zolpidem), and (non-) invasive brain stimulation (e.g. transcranial direct current stimulation, deep brain stimulation) have shown partial effectiveness in promoting consciousness recovery. Although some features of conscious brain states may improve in response to neuromodulation, targeting often remains non-specific and does not always lead to (behavioural) improvements. The fields of brain state identification and neuromodulation of brain states in relation to consciousness are showing fascinating developments that, when integrated, might propel the development of new and better-targeted techniques for disorders of consciousness. We here propose a therapeutic framework for the identification and modulation of brain states to facilitate the interaction between the two fields. We propose that brain states should be identified in a predictive setting, followed by theoretical and empirical testing (i.e. in animal models, under anaesthesia and in patients with a disorder of consciousness) of neuromodulation techniques to promote consciousness in line with such predictions. This framework further helps to identify where challenges and opportunities lay for the maturation of brain state research in the context of states of consciousness. It will become apparent that one angle of opportunity is provided through the addition of computational modelling. Finally, it aids in recognizing possibilities and obstacles for the clinical translation of these diagnostic techniques and neuromodulation treatment options across both the multimodal and multi-species approaches outlined throughout the review.
Accessibility: Document exists in file
Language:
eng
Author:
van der Lande, G. J. M.
Secondary author(s):
Casas-Torremocha, D., Manasanch, A., Dalla Porta, L., Gosseries, O., Alnagger, N., Barra, A., Mejías, J. F., Panda, R., Riefolo, F., Thibaut, A., Bonhomme, V., Thirion, B., Clasca, F., Gorostiza, P., Sanchez-Vives, M. V., Deco, G., Laureys, S., Zamora-López, G., Annen, J.
Document type:
Article
Number of reproductions:
3
Reference:
van der Lande, G. J. M., Casas-Torremocha, D., Manasanch, A., Dalla Porta, L., Gosseries, O., Alnagger, N., Barra, A., Mejías, J. F., Panda, R., Riefolo, F., Thibaut, A., Bonhomme, V., Thirion, B., Clasca, F., Gorostiza, P., Sanchez-Vives, M. V., Deco, G., Laureys, S., Zamora-López, G., & Annen, J. (2024). Brain state identification and neuromodulation to promote recovery of consciousness. Brain Communications, 6(5), fcae362. https://doi.org/10.1093/braincomms/fcae362
2-year Impact Factor: 4.1|2023
Impact factor notes: Impact factor not available yet for 2024
Times cited: 0|2025-02-19
Indexed document: Yes
Quartile: Q1
Keywords: (disorders of) Consciousness / Anaesthesia / Animal models / Brain states / Neuromodulation

Brain state identification and neuromodulation to promote recovery of consciousness

Brain state identification and neuromodulation to promote recovery of consciousness
DocumentUnifying turbulent dynamics framework distinguishes different brain states2022

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, 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-146
Location: BF-GMS
Title:
Unifying turbulent dynamics framework distinguishes different brain states
Publication year: 2022
URL:
https://doi.org/10.1038/s42003-022-03576-6
Abstract/Results: ABSTRACT:
Significant advances have been made by identifying the levels of synchrony of the underlying dynamics of a given brain state. This research has demonstrated that non-conscious dynamics tend to be more synchronous than in conscious states, which are more asynchronous. Here we go beyond this dichotomy to demonstrate that different brain states are underpinned by dissociable spatiotemporal dynamics. We investigated human neuroimaging data from different brain states (resting state, meditation, deep sleep and disorders of consciousness after coma). The model-free approach was based on Kuramoto's turbulence framework using coupled oscillators. This was extended by a measure of the information cascade across spatial scales. Complementarily, the model-based approach used exhaustive in silico perturbations of whole-brain models fitted to these measures. This allowed studying of the information encoding capabilities in given brain states. Overall, this framework demonstrates that elements from turbulence theory provide excellent tools for describing and differentiating between brain states.
Accessibility: Document exists in file
Language:
eng
Author:
Escrichs, A.
Secondary author(s):
Perl, Y. S., Uribe, C., Camara, E., Türker, B., Pyatigorskaya, N., López-González, A., Pallavicini, C., Panda, R., Annen, J., Gosseries, O., Laureys, S., Naccache, L., Sitt, J. D., Laufs, H., Tagliazucchi, E., Kringelbach, M. L., Deco, G.
Document type:
Article
Number of reproductions:
3
Reference:
Escrichs, A., Perl, Y. S., Uribe, C., Camara, E., Türker, B., Pyatigorskaya, N., López-González, A., Pallavicini, C., Panda, R., Annen, J., Gosseries, O., Laureys, S., Naccache, L., Sitt, J. D., Laufs, H., Tagliazucchi, E., Kringelbach, M. L., & Deco, G. (2022). Unifying turbulent dynamics framework distinguishes different brain states. Communications Biology, 5(1), 638. https://doi.org/10.1038/s42003-022-03576-6
2-year Impact Factor: 5.9|2022
Times cited: 26|2025-02-28
Indexed document: Yes
Quartile: Q1
Keywords: Brain states / Consciousness / Kuramoto's turbulence framework

Unifying turbulent dynamics framework distinguishes different brain states

Unifying turbulent dynamics framework distinguishes different brain states