Developmental Change in Infants' Detection of Visual Faces that Match Auditory Vowels

摘要: Infants demonstrate robust audiovisual (AV) perception, detecting, for example, which visual face matches auditory speech in many paradigms. For simple phonetic segments, like vowels, previous work has assumed developmental stability AV matching. This study shows dramatic differences matching performance different vowels across the first year of life: 3-, 6-, and 9-month-olds were familiarized 40 sec with a articulating vowel synchrony presentations that vowel, but crucially, mouth was occluded. At test, infants shown two still photos same without occlusion 1 min silence. One had static articulatory configuration previously heard while other vowel. Three used: /a/, /i/, /u/. Results suggest varies according to age Interestingly, results are not linked frequency input, may instead be related infants' ability produce target A speculative hypothesis is production infancy modulates