title: Perceived colour under conditions of chromatic adaptation: evidence for gain control by pi mechanisms.
mesh_terms: D000221:Adaptation, Ocular; D003118:Color Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D008954:Models, Biological; D012684:Sensory Thresholds / Q000502:physiology; D013053:Spectrophotometry