Southern Connecticut State University, New Haven, CT, USA.
Haskins Laboratories, 300 George Street, New Haven, CT, 06511, USA.
J Autism Dev Disord. 2022 Jan;52(1):28-37. doi: 10.1007/s10803-021-04916-x. Epub 2021 Feb 25.
Children with autism spectrum disorders have been reported to be less influenced by a speaker's face during speech perception than those with typically development. To more closely examine these reported differences, a novel visual phonemic restoration paradigm was used to assess neural signatures (event-related potentials [ERPs]) of audiovisual processing in typically developing children and in children with autism spectrum disorder. Video of a speaker saying the syllable /ba/ was paired with (1) a synthesized /ba/ or (2) a synthesized syllable derived from /ba/ in which auditory cues for the consonant were substantially weakened, thereby sounding more like /a/. The auditory stimuli are easily discriminable; however, in the context of a visual /ba/, the auditory /a/ is typically perceived as /ba/, producing a visual phonemic restoration. Only children with ASD showed a large /ba/-/a/ discrimination response in the presence of a speaker producing /ba/, suggesting reduced influence of visual speech.
据报道，与发育正常的儿童相比，自闭症谱系障碍儿童在言语感知过程中受说话者面部的影响较小。为了更仔细地研究这些报道的差异，使用了一种新颖的视觉语音修复范式来评估发育正常的儿童和自闭症谱系障碍儿童的视听处理的神经特征（事件相关电位 [ERP]）。说话者说音节 /ba/ 的视频与（1）合成的 /ba/ 或（2）源自 /ba/ 的合成音节配对，其中辅音的听觉线索大大减弱，因此听起来更像 /a/。听觉刺激很容易区分；然而，在视觉 /ba/ 的背景下，听觉 /a/ 通常被感知为 /ba/，从而产生视觉语音修复。只有自闭症谱系障碍儿童在说话者发出 /ba/ 的情况下表现出较大的 /ba/-/a/ 辨别反应，这表明视觉言语的影响降低。
