title: Normal and color defective perception of Fechner-Benham colors: implications for color vision theory.
mesh_terms: D000328:Adult; D003118:Color Perception / Q000502:physiology*; D003119:Color Perception Tests; D003117:Color Vision Defects / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007088:Illusions / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D009903:Optical Illusions / Q000502:physiology*