Neuronal correlates of full and partial visual conscious perception

Haque, H., Lobier, M., Palva, J. M. and Palva, S. (2020) Neuronal correlates of full and partial visual conscious perception. Consciousness and Cognition, 78, 102863. (PMID:31887533)

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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.

Item Type:Articles
Additional Information:This study was supported by the Academy of Finland (SA 266402, 1303933 and SA 325404 to SP and SA 253130 and 256472 to MP).
Glasgow Author(s) Enlighten ID:Palva, Professor Satu and Palva, Professor Matias
Authors: Haque, H., Lobier, M., Palva, J. M., and Palva, S.
College/School:College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
Journal Name:Consciousness and Cognition
ISSN (Online):1090-2376
Published Online:27 December 2019
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Consciousness and Cognition 78:102863
Publisher Policy:Reproduced under a Creative Commons License

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