Contrast detection and near-threshold discrimination in human vision.
D004192:Discrimination, Psychological; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D008959:Models, Neurological; D010364:Pattern Recognition, Visual / Q000502:physiology*; D011594:Psychometrics; D012684:Sensory Thresholds / Q000502:physiology; D014792:Visual Acuity