Failure to demonstrate changes in the visual system of monkeys kept in darkness or in colored lights.
D000818:Animals; D003118:Color Perception / Q000502:physiology*; D055253:Color Vision; D003624:Darkness; D000882:Haplorhini; D008027:Light; D012160:Retina / Q000502:physiology*; D013788:Thalamus
COLOR VISION/physiology; RETINA/physiology; THALAMUS