title: Color-motion asynchrony assessed along the chromatic axes and with luminance variation.
abstract: Color-motion asynchrony was fist reported by Moutoussis and Zeki (Proceedings of the Royal Society B, 264, 393-399, 1997), who showed that a motion direction change needs to precede a color change by approximately 80-120 ms in order for humans to perceive change as synchronous when a visual stimulus changes its direction of motion and color rapidly and repetitively. This phenomenon was investigated with stimuli with a single change of color and a single change of motion. The stimulus was varied along the L/(L+M) axis, along the S/(L+M) axis, or in luminance at a constant chromaticity. The psychophysical task was either a correspondence task or a temporal judgment task. The results showed that all three of the variations in color or luminance produced similar color-motion asynchronies, but the correspondence task consistently showed greater asynchrony (80-110 ms) than did the temporal order judgment task (45-70 ms). The results indicated that color-motion asynchrony is processed at cortical areas after cone-specific chromatic signals and luminance signals are integrated.
authors.affiliation: Department of Psychology, California State University, 800 N. State College Boulevard, Fullerton, CA, 92834-6846, USA, eself@fullerton.edu.
authors.forename: Eriko
authors.initials: E
authors.lastname: Self
mesh_terms: D000328:Adult; D003118:Color Perception / Q000502:physiology*; D015350:Contrast Sensitivity / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D013998:Time Perception / Q000502:physiology*; D055815:Young Adult