title: Differential heart rate changes to equally intense white noise and tone.
mesh_terms: D000161:Acoustic Stimulation; D003214:Conditioning, Classical; D006185:Habituation, Psychophysiologic; D006339:Heart Rate; D006801:Humans; D008297:Male; D009622:Noise; D009949:Orientation; D013216:Reflex, Startle; D013016:Sound