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dc.contributor.author
Cavanna, Federico Amadeo
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dc.contributor.author
Gonzalez Vilas, Martina
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dc.contributor.author
Palmucci, Matías Damian
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dc.contributor.author
Tagliazucchi, Enzo Rodolfo
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dc.date.available
2019-03-20T19:02:09Z
dc.date.issued
2018-10
dc.identifier.citation
Cavanna, Federico Amadeo; Gonzalez Vilas, Martina; Palmucci, Matías Damian; Tagliazucchi, Enzo Rodolfo; Dynamic functional connectivity and brain metastability during altered states of consciousness; Academic Press Inc Elsevier Science; Neuroimage; 180; Part B; 10-2018; 383-395
dc.identifier.issn
1053-8119
dc.identifier.uri
http://hdl.handle.net/11336/72132
dc.description.abstract
The scientific study of human consciousness has greatly benefited from the development of non-invasive brain imaging methods. The quest to identify the neural correlates of consciousness combined psychophysical experimentation with neuroimaging tools such as functional magnetic resonance imaging (fMRI) to map the changes in neural activity associated with conscious vs. unconscious percepts. Different neuroimaging methods have also been applied to characterize spontaneous brain activity fluctuations during altered states of consciousness, and to develop quantitative metrics for the level of consciousness. Most of these studies, however, have not explored the dynamic nature of the whole-brain imaging data provided by fMRI. A series of empirical and computational studies strongly suggests that the temporal fluctuations observed in this data present a non-trivial structure, and that this structure is compatible with the exploration of a discrete repertoire of states. In this review we focus on how dynamic neuroimaging can be used to address theoretical accounts of consciousness based on the hypothesis of a dynamic core, i.e. a constantly evolving and transiently stable set of coordinated neurons that constitute an integrated and differentiated physical substrate for each conscious experience. We review work exploring the possibility that metastability in brain dynamics leads to a repertoire of dynamic core states, and discuss how it might be modified during altered states of consciousness. This discussion prompts us to review neuroimaging studies aimed to map the dynamic exploration of the repertoire of states as a function of consciousness. Complementary studies of the dynamic core hypothesis using perturbative methods are also discussed. Finally, we propose that a link between metastability in brain dynamics and the level of consciousness could pave the way towards a mechanistic understanding of altered states of consciousness using tools from dynamical systems theory and statistical physics.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Academic Press Inc Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Brain Dynamics
dc.subject
Consciousness
dc.subject
Dynamic Core
dc.subject
Fmri
dc.subject
Metastability
dc.subject
Neuroimaging
dc.subject.classification
Ciencias de la Computación
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dc.subject.classification
Ciencias de la Computación e Información
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Dynamic functional connectivity and brain metastability during altered states of consciousness
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-03-20T13:33:29Z
dc.journal.volume
180
dc.journal.number
Part B
dc.journal.pagination
383-395
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Cavanna, Federico Amadeo. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Gonzalez Vilas, Martina. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Palmucci, Matías Damian. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Tagliazucchi, Enzo Rodolfo. Centre de Recherche de I'Institut du Cerveau et de la Moelle Epinière; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Neuroimage
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1053811917308133
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.neuroimage.2017.09.065
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