Cephalic vasomotor and heart rate measures of orienting and defensive reflexes.
D001307:Auditory Perception; D003214:Conditioning, Classical; D006257:Head / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D009622:Noise; D009949:Orientation; D010991:Plethysmography; D014666:Vasomotor System / Q000502:physiology*