Acoustic variation and arousal level in infants.
D000162:Acoustics; D001143:Arousal; D005071:Evoked Potentials; D006339:Heart Rate; D006801:Humans; D007223:Infant; D009043:Motor Activity; D013216:Reflex, Startle; D012119:Respiration; D012890:Sleep; D013016:Sound; D014851:Wakefulness