title: Visual fixation and the effect of voice quality and content differences in 2-month-old infants.
mesh_terms: D001288:Attention; D004192:Discrimination, Psychological; D005260:Female; D005403:Fixation, Ocular; D006801:Humans; D007223:Infant; D007804:Language Development; D008297:Male; D013997:Time Factors; D014831:Voice