Canales-Johnson, A;
Billig, AJ;
Olivares, F;
Gonzalez, A;
Garcia, MDC;
Silva, W;
Vaucheret, E;
... Bekinschtein, TA; + view all
(2020)
Dissociable Neural Information Dynamics of Perceptual Integration and Differentiation during Bistable Perception.
Cereb Cortex
, 30
(8)
pp. 4563-4580.
10.1093/cercor/bhaa058.
Preview |
Text
bhaa058.pdf - Published Version Download (2MB) | Preview |
Abstract
At any given moment, we experience a perceptual scene as a single whole and yet we may distinguish a variety of objects within it. This phenomenon instantiates two properties of conscious perception: integration and differentiation. Integration is the property of experiencing a collection of objects as a unitary percept and differentiation is the property of experiencing these objects as distinct from each other. Here, we evaluated the neural information dynamics underlying integration and differentiation of perceptual contents during bistable perception. Participants listened to a sequence of tones (auditory bistable stimuli) experienced either as a single stream (perceptual integration) or as two parallel streams (perceptual differentiation) of sounds. We computed neurophysiological indices of information integration and information differentiation with electroencephalographic and intracranial recordings. When perceptual alternations were endogenously driven, the integrated percept was associated with an increase in neural information integration and a decrease in neural differentiation across frontoparietal regions, whereas the opposite pattern was observed for the differentiated percept. However, when perception was exogenously driven by a change in the sound stream (no bistability), neural oscillatory power distinguished between percepts but information measures did not. We demonstrate that perceptual integration and differentiation can be mapped to theoretically motivated neural information signatures, suggesting a direct relationship between phenomenology and neurophysiology.
| Type: | Article |
|---|---|
| Title: | Dissociable Neural Information Dynamics of Perceptual Integration and Differentiation during Bistable Perception |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/cercor/bhaa058 |
| Publisher version: | https://doi.org/10.1093/cercor/bhaa058 |
| Language: | English |
| Additional information: | © The Author(s) 2020. Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | auditory streaming, bistable perception, information differentiation, information integration, phenomenal consciousness |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > The Ear Institute |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10106379 |
Archive Staff Only
 |
View Item |
