The relation of autonomic activity to age differences in vigilance.
D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D001288:Attention; D001341:Autonomic Nervous System / Q000502:physiology*; D001831:Body Temperature; D004594:Electrophysiology; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D011603:Psychophysiology