Discrete color filling beyond luminance gaps along perceptual surfaces

Kanai, Ryota, Wu, Daw-An, Verstraten, Frans A J and Shimojo, Shinsuke (2006) Discrete color filling beyond luminance gaps along perceptual surfaces. Journal of Vision, 6 (12). pp. 1380-1395. ISSN 1534-7362

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Perceived color at a point in space is not determined simply by the color directly stimulating the corresponding retinal position. Surface color is informed by flanking edge signals, which also serve to inhibit the intrusion of signals from neighboring surfaces. Spatially continuous local interactions among color and luminance signals have been implicated in a propagation process often referred to as filling-in. Here, we report a phenomenon of discrete color filling whereby color jumps over luminance gaps filling into disconnected regions of the stimulus. This color filling is found to be blocked at boundaries defined by texture. The color filling is also highly specific to the elements belonging to a common perceptual surface, even when multiple surfaces are transparently overlaid. Our results indicate that color filling can be governed by a host of visual cues outside the realm of first-order color and brightness, via their impact on perceptual surface segmentation and segregation.

Item Type: Article
Schools and Departments: School of Psychology > Psychology
Subjects: R Medicine > RC Internal medicine > RC0321 Neurosciences. Biological psychiatry. Neuropsychiatry
Depositing User: Ryota Kanai
Date Deposited: 11 Mar 2013 10:33
Last Modified: 11 Mar 2013 10:33
URI: http://srodev.sussex.ac.uk/id/eprint/43988
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