title: Arousal systems and infant heart rate responses.
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D000367:Age Factors; D001143:Arousal; D001288:Attention; D001921:Brain / Q000254:growth & development; D002657:Child Development; D005246:Feedback; D006339:Heart Rate; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D009043:Motor Activity; D009949:Orientation; D010775:Photic Stimulation; D012018:Reflex; D012119:Respiration; D012890:Sleep; D014110:Touch; D014851:Wakefulness