Cited by 14Neural dynamics and brain functionVisual perception and processing mechanismsPhilosophy and Theoretical Science

Thalamocortical inhibitory dynamics support conscious perception

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Min, Byoung-Kyong, Kim, Hyun Seok, Pinotsis, Dimitris A., Pantazis, Dimitrios·2020·NeuroImage

Abstract

Whether thalamocortical interactions play a decisive role in conscious perception remains an open question. We presented rapid red/green color flickering stimuli, which induced the mental perception of either an illusory orange color or non-fused red and green colors. Using magnetoencephalography, we observed 6-Hz thalamic activity associated with thalamocortical inhibitory coupling only during the conscious perception of the illusory orange color. This sustained thalamic disinhibition was temporally coupled with higher visual cortical activation during the conscious perception of the orange color, providing neurophysiological evidence of the role of thalamocortical synchronization in conscious awareness of mental representation. Bayesian model comparison consistently supported the thalamocortical model in conscious perception. Taken together, experimental and theoretical evidence established the thalamocortical inhibitory network as a gateway to conscious mental representations.

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  • Lactate and glutamate may be dissociated from BOLD changes when cortical input and output are differentially modulated by, for example, intracortical or thalamocortical inhibition.

    “Our results suggest that lactate and glutamate may be dissociated from BOLD changes when cortical input and output are differentially modulated by for example, intracortical (Viswanathan and Freeman, 2007) or thalamocortical (Min et al., 2020) inhibition.”

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Research works printed but not linked: 5

  1. CIE, 1931. Commission Internationale de l' Eclairage Proceedings. Cambridge University Press, Cambridge, UK.
  2. Jones, E.G., 1985. The Thalamus. Plenum Press, New York.
  3. Penfield, W., Feindel, W., 1975. The Mystery of the Mind: A Critical Study of Consciousness and the Human Brain: with Discussions by W. Feindel Et Al. Princeton University Press.
  4. Pinotsis, D.A., Donoghue, J., Miller, E.K., preprint. Thalamocortical Connectivity in Anesthetized Monkeys.
  5. Steriade, M., Jones, E.G., McCormick, D.A., 1997. Thalamus Elsevier, Amsterdam.

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Authors
Min, B.-K., Kim, H. S., Pinotsis, D. A., & Pantazis, D.
Affiliations
  • McGovern Institute for Brain Research (US)
  • Korea University (KR)
  • City, University of London (GB)
Corresponding author
Min, Byoung-Kyong
Venue
NeuroImage
Publisher
Elsevier BV
Published
2020-10
Volume
220
Pages
117066
ISSN
1053-8119 (ISSN-L)
OpenAlex
W3036893484
Cited by
14
References
94
Citations by year
2026: 2 · 2025: 1 · 2024: 5 · 2023: 3 · 2022: 3
FWCI
0.81
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • City Research Online (City University London) (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Research Foundation of Korea
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Philosophy and Theoretical Science
Keywords
conscious perception, thalamic oscillations, visual cortex activation, Bayesian model selection, neural oscillations
MeSH terms
Adult, Cerebral Cortex, Consciousness, Female, Humans, Male, Neural Inhibition, Neural Pathways, Photic Stimulation, Thalamus, Visual Perception, Magnetoencephalography

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