Visual fixation and voice discrimination in 2-month-old infants.
D000161:Acoustic Stimulation; D001288:Attention; D001307:Auditory Perception; D004192:Discrimination, Psychological; D005260:Female; D006185:Habituation, Psychophysiologic; D006801:Humans; D007223:Infant; D007804:Language Development; D008297:Male; D011930:Reaction Time; D014831:Voice