Cited by 137Functional Brain Connectivity StudiesNeural dynamics and brain functionPhilosophy and Theoretical Science

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Dynamic functional connectivity and brain metastability during altered states of consciousness

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Cavanna, Federico, Vilas, Martina G., Palmucci, Matías, Tagliazucchi, Enzo·2018·NeuroImage

DOI 10.1016/j.neuroimage.2017.09.065

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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.

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Authors: Cavanna, F., Vilas, M. G., Palmucci, M., & Tagliazucchi, E.
Affiliations: Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
Institut du Cerveau (FR)
Corresponding author: Tagliazucchi, Enzo
ORCID: Cavanna, Federico
Vilas, Martina G.
Tagliazucchi, Enzo
Venue: NeuroImage
Publisher: Elsevier BV
Published: 2018-10
Volume: 180
Issue: Pt B
Pages: 383-395
ISSN: 1053-8119 (ISSN-L)
DOI: 10.1016/j.neuroimage.2017.09.065
OpenAlex: W2762088711
Cited by: 137
References: 162
Citations by year: 2026: 10 · 2025: 18 · 2024: 18 · 2023: 15 · 2022: 17 · 2021: 22 · 2020: 16 · 2019: 14 · 2018: 6
FWCI: 1.13
Type: journal article
Language: en
Open access: green
americanae.aecid.es
Licence: cc-by-nc-nd
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
www.elsevier.com/legal/tdmrep-license (tdm)
Locations: NeuroImage (publishedVersion)
PubMed (publishedVersion)
Americanae (AECID Library) (submittedVersion, cc-by-nc-nd)
LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc-nd)
Funders: Consejo Nacional de Investigaciones Científicas y Técnicas
Topics: Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Social Sciences › Arts and Humanities › Philosophy › Philosophy and Theoretical Science
Keywords: dynamic functional connectivity, altered states of consciousness, neural correlates of consciousness, level of consciousness, dynamic brain states, perturbation method, dynamical systems theory
MeSH terms: Brain, Brain Mapping, Consciousness, Consciousness Disorders, Humans

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Dynamic functional connectivity and brain metastability during altered states of consciousness

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