title: VIGILANCE AS A FUNCTION OF STIMULUS VARIETY AND RESPONSE COMPLEXITY.
mesh_terms: D000124:Achievement; D001288:Attention; D035843:Biomedical Research; D006801:Humans; D008568:Memory; D009048:Motor Skills; D011585:Psychology, Applied; D011930:Reaction Time; D014785:Vision, Ocular; D014796:Visual Perception
keywords: ACHIEVEMENT; ATTENTION; CLINICAL RESEARCH; MEMORY; MOTOR SKILLS; PSYCHOLOGY, APPLIED; REACTION TIME; VISUAL PERCEPTION