Infant perception of gestural contrasts: prerequisites for the acquisition of a visually specified language.
D005260:Female; D005868:Gestures; D006185:Habituation, Psychophysiologic; D006801:Humans; D007223:Infant; D007697:Kinesics; D008297:Male; D009039:Motion Perception; D002666:Psychology, Child; D012813:Sign Language