Feed: Journal of Vision current issue
Posted on: woensdag 2 februari 2011 16:00
Author: Feitosa-Santana, C., D'Antona, A. D., Shevell, S. K.
Subject: What kinds of contours bound the reach of filled-in color?
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. |
Suggested by Maarten
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