title: Context-dependent judgments of color that might allow color constancy in scenes with multiple regions of illumination.
abstract: For a color-constant observer, a change in the spectral composition of the illumination is accompanied by a corresponding change in the chromaticity associated with an achromatic percept. However, maintaining color constancy for different regions of illumination within a scene implies the maintenance of multiple perceptual references. We investigated the features of a scene that enable the maintenance of separate perceptual references for two displaced but overlapping chromaticity distributions. The time-averaged, retinotopically localized stimulus was the primary determinant of color appearance judgments. However, spatial separation of test samples additionally served as a symbolic cue that allowed observers to maintain two separate perceptual references.
authors.affiliation: Department of Experimental Psychology, South Parks Road, Oxford, OX1 3UD, UK. robert.lee@psy.ox.ac.uk
authors.forename: R J
authors.initials: RJ
authors.lastname: Lee
authors.forename: H E
authors.initials: HE
authors.lastname: Smithson
mesh_terms: D003116:Color; D003118:Color Perception / Q000502:physiology*; D003463:Cues; D005133:Eye Movements / Q000502:physiology; D005260:Female; D006801:Humans; D007600:Judgment / Q000502:physiology*; D008029:Lighting; D008297:Male; D010775:Photic Stimulation; D013997:Time Factors