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J Vis. 2011 Feb 2;11(2). pii: 2. doi: 10.1167/11.2.2.

What kinds of contours bound the reach of filled-in color?

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1
Department of Psychology, University of Chicago, Chicago, IL 60637, USA. claudia@feitosa-santana.com

Abstract

Is a retinal representation of an edge necessary to constrain the reach of color filling-in? If so, then color filling-in should not be constrained by illusory contours, because they do not exist at a retinal level. Alternatively, if color filling-in is constrained by contours at a perceptual level of neural representation, regardless of whether there is a retinal representation, then color filling-in should be constrained by illusory contours. To address this question, a variety of real luminance edges and illusory contours were presented under conditions designed to cause color filling-in. The results showed that illusory contours bounded the reach of color filling-in. A neural representation of a contour may first exist at a retinal level or a cortical level; in either case, the contour exists at a perceptual level and bounds color filling-in.

PMID:
21289061
PMCID:
PMC3200186
DOI:
10.1167/11.2.2
[Indexed for MEDLINE]
Free PMC Article
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