Division of Speech and Hearing Sciences, CB# 7190, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7190, USA.
J Autism Dev Disord. 2012 Aug;42(8):1616-29. doi: 10.1007/s10803-011-1401-z.
Young boys with autism were compared to typically developing boys on responses to nonsocial and child-directed speech (CDS) stimuli. Behavioral (looking) and physiological (heart rate and respiratory sinus arrhythmia) measures were collected. Boys with autism looked equally as much as chronological age-matched peers at nonsocial stimuli, but less at CDS stimuli. Boys with autism and language age-matched peers differed in patterns of looking at live versus videotaped CDS stimuli. Boys with autism demonstrated faster heart rates than chronological age-matched peers, but did not differ significantly on respiratory sinus arrhythmia. Reduced attention during CDS may restrict language-learning opportunities for children with autism. The heart rate findings suggest that young children with autism have a nonspecific elevated arousal level.
研究人员将自闭症男童与普通发展男童进行对比,观察他们对非社会性及儿童指向性言语(CDS)刺激的反应。研究人员收集了行为(注视)和生理(心率和呼吸窦性心律失常)方面的数据。自闭症男童对非社会性刺激的注视时长与年龄匹配的正常男童相当,但对 CDS 刺激的注视时长则较少。自闭症男童和语言年龄匹配的正常男童在观看现场 CDS 刺激和录像 CDS 刺激时的注视模式存在差异。自闭症男童的心率快于年龄匹配的正常男童,但在呼吸窦性心律失常方面没有显著差异。在 CDS 期间注意力减少可能会限制自闭症儿童的语言学习机会。心率的研究结果表明,自闭症幼儿的非特异性唤醒水平较高。