title: Information concerning colour derived from a single boundary.
abstract: Two experiments are described in which visual information is derived from a single moving boundary in the retinal image, all other boundaries being stabilized so that they contribute no visual information. In this situation the subject perceives the same colours on the two sides of the boundary as would be perceived in normal vision when, owing to eye-movements, all boundaries in the retinal image are moving relative to the retina. Thus complete information leading to perception of hue and saturation as well as brightness, and not merely differences of hue etc. on the two sides, can be derived from a single boundary.
mesh_terms: D003118:Color Perception; D005133:Eye Movements; D006801:Humans; D014792:Visual Acuity; D014794:Visual Fields