Neuronal correlates of full and partial visual conscious perception

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Haque , H , Lobier , M , Palva , J M & Palva , S 2020 , ' Neuronal correlates of full and partial visual conscious perception ' , Consciousness and Cognition , vol. 78 , 102863 . https://doi.org/10.1016/j.concog.2019.102863

Title: Neuronal correlates of full and partial visual conscious perception
Author: Haque, Hamed; Lobier, Muriel; Palva, J. Matias; Palva, Satu
Contributor: University of Helsinki, Neuroscience Center
University of Helsinki, Neuroscience Center
University of Helsinki, Neuroscience Center
University of Helsinki, Neuroscience Center
Date: 2020-02
Number of pages: 19
Belongs to series: Consciousness and Cognition
ISSN: 1053-8100
URI: http://hdl.handle.net/10138/318077
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.
Subject: 3112 Neurosciences
119 Other natural sciences
MEG
Conscious perception
Visual
Oscillations
Evoked response
LOCALIZATION
PARTIAL AWARENESS
AMPLITUDE DYNAMICS
SUPPRESSION
SYNCHRONIZATION
CORTEX
GAMMA-BAND ACTIVITY
OSCILLATIONS
ACCESS
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