Cited by 101Functional Brain Connectivity StudiesNeural dynamics and brain functionPhilosophy and Theoretical Science

Functional geometry of the cortex encodes dimensions of consciousness

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Huang, Zirui, Mashour, George A., Hudetz, Anthony G.·2023·Nature Communications

Abstract

Consciousness is a multidimensional phenomenon, but key dimensions such as awareness and wakefulness have been described conceptually rather than neurobiologically. We hypothesize that dimensions of consciousness are encoded in multiple neurofunctional dimensions of the brain. We analyze cortical gradients, which are continua of the brain's overarching functional geometry, to characterize these neurofunctional dimensions. We demonstrate that disruptions of human consciousness - due to pharmacological, neuropathological, or psychiatric causes - are associated with a degradation of one or more of the major cortical gradients depending on the state. Network-specific reconfigurations within the multidimensional cortical gradient space are associated with behavioral unresponsiveness of various etiologies, and these spatial reconfigurations correlate with a temporal disruption of structured transitions of dynamic brain states. In this work, we therefore provide a unifying neurofunctional framework for multiple dimensions of human consciousness in both health and disease.

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  • Huang et al. (2023) identified three neurofunctional gradients using dimensionality reduction on resting state fMRI data that were differentially affected by administration of propofol or ketamine and in pathological conditions like unresponsive wakefulness syndrome and schizophrenia.

    “Using dimensionality reduction on resting state fMRI data, they identified three neurofunctional gradients that were differentially affected by the administration of propofol or ketamine and in pathological conditions like unresponsive wakefulness syndrome and schizophrenia.”

    From What does it mean for consciousness to be multidimensional? A narrative review (2024) · cites this paper as Huang et al., 2023

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Authors
Huang, Z., Mashour, G. A., & Hudetz, A. G.
Affiliations
University of Michigan (US)
Corresponding author
Huang, Zirui
Venue
Nature Communications
Published
2023-01-05
Volume
14
Issue
1
Pages
72-72
ISSN
2041-1723 (ISSN-L)
OpenAlex
W4313571673
Cited by
101
References
72
Citations by year
2026: 11 · 2025: 23 · 2024: 46 · 2023: 19 · 2022: 1 · 2020: 1
FWCI
14.83
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
U.S. Department of Health & Human Services | NIH | National Institute of General Medical Sciences (5T32GM103730-09, R01-GM103894)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Philosophy and Theoretical Science
Keywords
consciousness, cortical gradients, awareness, wakefulness, dynamic brain states, consciousness disorders, brain network reconfiguration
MeSH terms
Brain, Brain Mapping, Consciousness, Humans, Wakefulness

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