Late disruption of central visual field disrupts peripheral perception of form and color
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Publication Date
2020-01-30Journal Title
PLOS ONE
Publisher
Public Library of Science
Volume
15
Issue
1
Language
en
Type
Article
This Version
VoR
Metadata
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Weldon, K. B., Woolgar, A., Rich, A. N., & Williams, M. A. (2020). Late disruption of central visual field disrupts peripheral perception of form and color. PLOS ONE, 15 (1) https://doi.org/10.1371/journal.pone.0219725
Abstract
Evidence from neuroimaging and brain stimulation studies suggest that visual information about objects in the periphery is fed back to foveal retinotopic cortex in a separate representation that is essential for peripheral perception. The characteristics of this phenomenon have important theoretical implications for the role fovea-specific feedback might play in perception. In this work, we employed a recently developed behavioral paradigm to explore whether late disruption to central visual space impaired perception of color. In the first experiment, participants performed a shape discrimination task on colored novel objects in the periphery while fixating centrally. Consistent with the results from previous work, a visual distractor presented at fixation ~100ms after presentation of the peripheral stimuli impaired sensitivity to differences in peripheral shapes more than a visual distractor presented at other stimulus onset asynchronies. In a second experiment, participants performed a color discrimination task on the same colored objects. In a third experiment, we further tested for this foveal distractor effect with stimuli restricted to a low-level feature by using homogenous color patches. These two latter experiments resulted in a similar pattern of behavior: a central distractor presented at the critical stimulus onset asynchrony impaired sensitivity to peripheral color differences, but, importantly, the magnitude of the effect was stronger when peripheral objects contained complex shape information. These results show a behavioral effect consistent with disrupting feedback to the fovea, in line with the foveal feedback suggested by previous neuroimaging studies.
Keywords
Research Article, Biology and life sciences, Social sciences, Medicine and health sciences, Research and analysis methods
Sponsorship
Australian Research Council (DP170101840)
National Health and Medical Research Council (APP1028578)
Medical Research Council (SUAG/052/G101400)
Identifiers
pone-d-19-18232
External DOI: https://doi.org/10.1371/journal.pone.0219725
This record's URL: https://www.repository.cam.ac.uk/handle/1810/301498
Rights
Attribution 4.0 International (CC BY 4.0)
Licence URL: https://creativecommons.org/licenses/by/4.0/
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