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Bistable Gestalts reduce activity in the whole of V1, not just the retinotopically predicted parts

de-Wit, LH; Kubilius, J; Wagemans, J; Op de Beeck, HP; (2012) Bistable Gestalts reduce activity in the whole of V1, not just the retinotopically predicted parts. Journal of Vision , 12 (11) p. 12. 10.1167/12.11.12. Green open access

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Abstract

Activity in the primary visual cortex reduces when certain stimuli can be perceptually organized as a unified Gestalt. This reduction could offer important insights into the nature of feedback computations within the human visual system; however, the properties of this response reduction have not yet been investigated in detail. Here we replicate this reduced V1 response, but find that the modulation in V1 (and V2) to the perceived organization of the input is not specific to the retinotopic location at which the sensory input from that stimulus is represented. Instead, we find a response modulation that is equally evident across the primary visual cortex. Thus in contradiction to some models of hierarchical predictive coding, the perception of an organized Gestalt causes a broad feedback effect that does not act specifically on the part of the retinotopic map representing the sensory input.

Type: Article
Title: Bistable Gestalts reduce activity in the whole of V1, not just the retinotopically predicted parts
Open access status: An open access version is available from UCL Discovery
DOI: 10.1167/12.11.12
Publisher version: http://dx.doi.org/10.1167/12.11.12
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL > Provost and Vice Provost Offices
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 > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Language and Cognition
URI: https://discovery.ucl.ac.uk/id/eprint/10044899
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