Heart rate variability and cardiac response to an auditory stimulus.
D000161:Acoustic Stimulation; D000704:Analysis of Variance; D001307:Auditory Perception; D001341:Autonomic Nervous System / Q000254:growth & development*; D005260:Female; D005865:Gestational Age; D006339:Heart Rate; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D012737:Sex Factors