Isolation of a third chromatic mechanism in the protanomalous observer.
D000221:Adaptation, Ocular; D000293:Adolescent; D000328:Adult; D003119:Color Perception Tests; D003117:Color Vision Defects / Q000503:physiopathology*; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000503:physiopathology; D013053:Spectrophotometry