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Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation

The surface area of early visual cortices varies several fold across healthy adult humans and is genetically heritable. But the functional consequences of this anatomical variability are still largely unexplored. Here we show that interindividual variability in human visual cortical surface area ref...

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Detalles Bibliográficos
Autores principales: Song, Chen, Schwarzkopf, Dietrich S., Rees, Geraint
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Pub. Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3731653/
https://www.ncbi.nlm.nih.gov/pubmed/23887643
http://dx.doi.org/10.1038/ncomms3201
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author Song, Chen
Schwarzkopf, Dietrich S.
Rees, Geraint
author_facet Song, Chen
Schwarzkopf, Dietrich S.
Rees, Geraint
author_sort Song, Chen
collection PubMed
description The surface area of early visual cortices varies several fold across healthy adult humans and is genetically heritable. But the functional consequences of this anatomical variability are still largely unexplored. Here we show that interindividual variability in human visual cortical surface area reflects a tradeoff between sensitivity to visual details and susceptibility to visual context. Specifically, individuals with larger primary visual cortices can discriminate finer orientation differences, whereas individuals with smaller primary visual cortices experience stronger perceptual modulation by global orientation contexts. This anatomically correlated tradeoff between discrimination sensitivity and contextual modulation of orientation perception, however, does not generalize to contrast perception or luminance perception. Neural field simulations based on a scaling of intracortical circuits reproduce our empirical observations. Together our findings reveal a feature-specific shift in the scope of visual perception from context-oriented to detail-oriented with increased visual cortical surface area.
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spelling pubmed-37316532013-08-02 Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation Song, Chen Schwarzkopf, Dietrich S. Rees, Geraint Nat Commun Article The surface area of early visual cortices varies several fold across healthy adult humans and is genetically heritable. But the functional consequences of this anatomical variability are still largely unexplored. Here we show that interindividual variability in human visual cortical surface area reflects a tradeoff between sensitivity to visual details and susceptibility to visual context. Specifically, individuals with larger primary visual cortices can discriminate finer orientation differences, whereas individuals with smaller primary visual cortices experience stronger perceptual modulation by global orientation contexts. This anatomically correlated tradeoff between discrimination sensitivity and contextual modulation of orientation perception, however, does not generalize to contrast perception or luminance perception. Neural field simulations based on a scaling of intracortical circuits reproduce our empirical observations. Together our findings reveal a feature-specific shift in the scope of visual perception from context-oriented to detail-oriented with increased visual cortical surface area. Nature Pub. Group 2013-07-26 /pmc/articles/PMC3731653/ /pubmed/23887643 http://dx.doi.org/10.1038/ncomms3201 Text en Copyright © 2013, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-by/3.0/ This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. To view a copy of this licence visit http://creativecommons.org/licenses/by/3.0/.
spellingShingle Article
Song, Chen
Schwarzkopf, Dietrich S.
Rees, Geraint
Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
title Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
title_full Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
title_fullStr Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
title_full_unstemmed Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
title_short Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
title_sort variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3731653/
https://www.ncbi.nlm.nih.gov/pubmed/23887643
http://dx.doi.org/10.1038/ncomms3201
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