title: Backward visual masking with homogeneous and patterned stimuli: comparison of retarded and nonretarded subjects.
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D004056:Differential Threshold; D006801:Humans; D008607:Intellectual Disability; D007360:Intelligence; D008027:Light; D008297:Male; D009949:Orientation; D010470:Perceptual Masking; D010775:Photic Stimulation; D011601:Psychophysics; D012160:Retina / Q000502:physiology; D013647:Task Performance and Analysis; D014793:Visual Cortex / Q000502:physiology; D014796:Visual Perception