UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

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

Song, C; Schwarzkopf, DS; Rees, G; (2013) Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation. Nature Communications , Article 2201. 10.1038/ncomms3201. Green open access

[img]
Preview
PDF
Song_Nature_Communications.pdf

Download (663kB)
[img]
Preview
PDF (Supplementary Information Figure S1; Table S1; Notes 1-5; References)
Song_Nature_Communications_Supplementary_Information.pdf

Download (441kB)

Abstract

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.

Type: Article
Title: Variability in visual cortex size reflects tradeoff between local orientation sensitivity and global orientation modulation
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/ncomms3201
Publisher version: http://dx.doi.org/doi:10.1038/ncomms3201
Language: English
Additional information: © 2013 Nature Publishing Group, a division of Macmillan Publisher Group. This article is licensed under a Creative Commons Attribution 3.0 Unported License.
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 > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1400849
Downloads since deposit
236Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item