Nonstimulated early visual areas carry information about surrounding context

Smith, F.W. and Muckli, L. (2010) Nonstimulated early visual areas carry information about surrounding context. Proceedings of the National Academy of Sciences of the United States of America (PNAS), 107 (46). pp. 20099-20103. ISSN 0027-8424

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Abstract

Even within the early sensory areas, the majority of the input to any given cortical neuron comes from other cortical neurons. To extend our knowledge of the contextual information that is transmitted by such lateral and feedback connections, we investigated how visually nonstimulated regions in primary visual cortex (V1) and visual area V2 are influenced by the surrounding context. We used functional magnetic resonance imaging (fMRI) and pattern-classification methods to show that the cortical representation of a nonstimulated quarter-field carries information that can discriminate the surrounding visual context. We show further that the activity patterns in these regions are significantly related to those observed with feed-forward stimulation and that these effects are driven primarily by V1. These results thus demonstrate that visual context strongly influences early visual areas even in the absence of differential feed-forward thalamic stimulation.

Item Type: Article
Faculty \ School: Faculty of Social Sciences > School of Psychology
Related URLs:
Depositing User: Pure Connector
Date Deposited: 29 Oct 2015 13:01
Last Modified: 21 Apr 2020 22:11
URI: https://ueaeprints.uea.ac.uk/id/eprint/54927
DOI: 10.1073/pnas.1000233107

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