Thalamocortical inhibitory dynamics support conscious perception

Byoung Kyong Min, Hyun Seok Kim, Dimitris A. Pinotsis, Dimitrios Pantazis

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number117066
JournalNeuroImage
Volume220
DOIs
Publication statusPublished - 2020 Oct 15

Keywords

  • Conscious perception
  • Thalamic reticular nucleus
  • Thalamocortical inhibitory network

ASJC Scopus subject areas

  • Neurology
  • Cognitive Neuroscience

Fingerprint Dive into the research topics of 'Thalamocortical inhibitory dynamics support conscious perception'. Together they form a unique fingerprint.

Cite this