Neuronal correlates of full and partial visual conscious perception

Research output: Contribution to journalArticle

Researchers

Research units

  • University of Helsinki
  • University of Glasgow

Abstract

Stimuli may induce only partial consciousness—an intermediate between null and full consciousness—where the presence but not identity of an object can be reported. The differences in the neuronal basis of full and partial consciousness are poorly understood. We investigated if evoked and oscillatory activity could dissociate full from partial conscious perception. We recorded human cortical activity with magnetoencephalography (MEG) during a visual perception task in which stimulus could be either partially or fully perceived. Partial consciousness was associated with an early increase in evoked activity and theta/low-alpha-band oscillations while full consciousness was also associated with late evoked activity and beta-band oscillations. Full from partial consciousness was dissociated by stronger evoked activity and late increase in theta oscillations that were localized to higher-order visual regions and posterior parietal and prefrontal cortices. Our results reveal both evoked activity and theta oscillations dissociate partial and full consciousness.

Details

Original languageEnglish
Article number102863
JournalConsciousness and Cognition
Volume78
Publication statusPublished - 1 Feb 2020
MoE publication typeA1 Journal article-refereed

    Research areas

  • Conscious perception, Evoked response, MEG, Oscillations, Visual

ID: 40262494