Temporal summation in a rod monochromat.
D000328:Adult; D003117:Color Vision Defects / Q000503:physiopathology*; D004056:Differential Threshold; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology*; D013997:Time Factors