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Is delayed foveal feedback critical for extra-foveal perception?

Chambers, Christopher D., Allen, Christopher P. G., Maizey, Leah and Williams, Mark A. 2013. Is delayed foveal feedback critical for extra-foveal perception? Cortex 49 (1) , pp. 327-335. 10.1016/j.cortex.2012.03.007

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Abstract

Recent neuroimaging evidence suggests that visual inputs arising beyond the fovea can be ‘fed back’ to foveal visual cortex to construct a new retinotopic representation. However, whether these representations are critical for extra-foveal perception remains unclear. Using transcranial magnetic stimulation we found that relatively late (350–400 msec) disruption of foveal retinotopic cortex impaired perceptual discrimination of objects in the periphery. These results are consistent with the hypothesis that feedback to the foveal retinotopic cortex is crucial for extra-foveal perception, and provide additional evidence for ‘constructive’ feedback in human vision.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Cardiff University Brain Research Imaging Centre (CUBRIC)
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Uncontrolled Keywords: Human vision; Transcranial magnetic stimulation; Feedback
Publisher: Elsevier
ISSN: 0010-9452
Funders: BBSRC, Wales Institute of Cognitive Neuroscience
Date of First Compliant Deposit: 30 March 2016
Last Modified: 09 Sep 2019 00:41
URI: http://orca-mwe.cf.ac.uk/id/eprint/31304

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