title: What kinds of contours bound the reach of filled-in color?
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.
authors.affiliation: Department of Psychology, University of Chicago, Chicago, IL 60637, USA. claudia@feitosa-santana.com
authors.forename: Claudia
authors.initials: C
authors.lastname: Feitosa-Santana
authors.forename: Anthony D
authors.initials: AD
authors.lastname: D'Antona
authors.forename: Steven K
authors.initials: SK
authors.lastname: Shevell
mesh_terms: D003116:Color; D003118:Color Perception / Q000502:physiology*; D055253:Color Vision / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology*; D006801:Humans; D007088:Illusions / Q000502:physiology*; D010775:Photic Stimulation / Q000379:methods; D011594:Psychometrics; D017949:Retinal Cone Photoreceptor Cells / Q000502:physiology*