Yu Alan C L, McAllister Robert, Mularoni Nicholas, To Carol K S
University of Chicago, Chicago, IL, USA.
University of Michigan, Ann Arbor, MI, USA.
J Autism Dev Disord. 2024 Mar 2. doi: 10.1007/s10803-024-06258-w.
Atypicalities in the prosodic aspects of speech are commonly considered in clinical assessments of autism. While there is an increasing number of studies using objective measures to assess prosodic deficits, such studies have primarily focused on the intonational and rhythmic aspects of prosody. Little is known about prosodic deficits that are reflected at the segmental level, despite the strong connection between prosody and segmental realization. This study examines the nature of sibilant-vowel coarticulation among male adult native speakers of Cantonese with autism and those without.
Fifteen Cantonese-speaking autistic (ASD) adults (mean age = 25 years) and 23 neuro-typical (NT) adults (mean age = 20 years) participated. Each participant read aloud 42 syllables with a sibilant onset in carrier phrase. Spectral means and variance, skewness and kurtosis were measured, and regressed by vocalic rounding (rounded vs. unrounded), cohort (ASD vs. NT), sibilant duration, and articulation rate.
While neurotypical participants exhibit sibilant-vowel coarticulation that are sensitive to variation in sibilant duration, autistic participants show no sensitivity to segmental temporal changes.
These findings point to the potential for atypicalities in prosody-segment interaction as an important characteristic of autistic speech.
在自闭症的临床评估中，通常会考虑言语韵律方面的非典型性。虽然越来越多的研究使用客观测量方法来评估韵律缺陷，但这些研究主要集中在韵律的语调和平率方面。尽管韵律与音段实现之间存在紧密联系，但对于在音段层面所反映出的韵律缺陷却知之甚少。本研究考察了粤语母语成年男性自闭症患者与非自闭症患者之间咝音-元音协同发音的性质。
15名讲粤语的自闭症（ASD）成年患者（平均年龄 = 25岁）和23名神经典型（NT）成年患者（平均年龄 = 20岁）参与了研究。每位参与者在载体短语中大声朗读42个以咝音开头的音节。测量了频谱均值、方差、偏度和峰度，并通过元音圆唇度（圆唇与不圆唇）、群组（ASD与NT）、咝音时长和发音速率进行回归分析。
神经典型参与者表现出对咝音时长变化敏感的咝音-元音协同发音，而自闭症参与者对音段时间变化不敏感。
这些发现表明，韵律-音段相互作用的非典型性可能是自闭症言语的一个重要特征。
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