While visual information from facial speech modulates auditory speech perception, it is less influential on audiovisual speech perception among autistic individuals than among typically developed individuals. In this study, we investigated the relationship between autistic traits (Autism-Spectrum Quotient; AQ) and the influence of visual speech on the recognition of Rubin's vase-type speech stimuli with degraded facial speech information. Participants were 31 university students (13 males and 18 females; mean age: 19.2, SD: 1.13 years) who reported normal (or corrected-to-normal) hearing and vision. All participants completed three speech recognition tasks (visual, auditory, and audiovisual stimuli) and the AQ-Japanese version. The results showed that accuracies of speech recognition for visual (i.e., lip-reading) and auditory stimuli were not significantly related to participants' AQ. In contrast, audiovisual speech perception was less susceptible to facial speech perception among individuals with high rather than low autistic traits. The weaker influence of visual information on audiovisual speech perception in autism spectrum disorder (ASD) was robust regardless of the clarity of the visual information, suggesting a difficulty in the process of audiovisual integration rather than in the visual processing of facial speech.

中文翻译：

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患有高自闭症特征的人的鲁宾花瓶式语音的麦格克效应减弱。

尽管来自面部语音的视觉信息会调节听觉语音感知，但自闭症个体对视听语音感知的影响要小于通常发育的个体。在这项研究中，我们调查了自闭特质（自闭症-频谱商； AQ）与视觉语音对鲁宾的花瓶型语音刺激识别面部表情信息质量的影响之间的关系。参加者为31名大学生，他们的听力和视力正常（或校正为正常），平均年龄：19.2，SD：1.13岁。所有参与者都完成了三个语音识别任务（视觉，听觉和视听刺激）和AQ日文版本。结果表明，语音识别对于视觉的准确性（即，唇读）和听觉刺激与参与者的AQ没有显着相关。相反，在具有高自闭性特征而不是低自闭性特征的个体中，视听语音感知不太容易受到面部语音感知的影响。无论视觉信息的清晰度如何，视觉信息对自闭症谱系障碍（ASD）的视听语音感知的较弱影响都是很强的，这表明在视听整合过程中而不是在面部语音的视觉处理中存在困难。