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Título:	A neurodynamical model of brightness induction in V1
Autor/a:	Penacchio, Olivier; Otazu, Xavier; Dempere-Marco, Laura
Abstract:	Brightness induction is the modulation of the perceived intensity of an area by the luminance of surrounding areas. Recent/nneurophysiological evidence suggests that brightness information might be explicitly represented in V1, in contrast to the/nmore common assumption that the striate cortex is an area mostly responsive to sensory information. Here we investigate/npossible neural mechanisms that offer a plausible explanation for such phenomenon. To this end, a neurodynamical model/nwhich is based on neurophysiological evidence and focuses on the part of V1 responsible for contextual influences is/npresented. The proposed computational model successfully accounts for well known psychophysical effects for static/ncontexts and also for brightness induction in dynamic contexts defined by modulating the luminance of surrounding areas./nThis work suggests that intra-cortical interactions in V1 could, at least partially, explain brightness induction effects and/nreveals how a common general architecture may account for several different fundamental processes, such as visual/nsaliency and brightness induction, which emerge early in the visual processing pathway.
Abstract:	This research has been partially supported by the Spanish Ministry of Science and Innovation through the research projects TIN2010-21771-C02-01 and TIN2010-21771-C02-02. OP is supported by the Spanish Ministry of Science and Innovation through the research project Consolider Ingenio (CSD 2007-00018).
Derechos:	@2013 Penacchio et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits/nunrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited http://creativecommons.org/licenses/by/4.0/
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	Public Library of Science
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