Audiovisual speech integration and lipreading in autism
Audiovisual speech integration and lipreading in autism
复制标题
DOI：
10.1111/j.1469-7610.2007.01766.x
复制
发表时间：
2007-08-01
影响因子：
7.6
通讯作者：
Bennetto, Loisa
中科院分区：
文献类型：
--
作者：
Smith, Elizabeth G.;Bennetto, Loisa
背景资料：在言语感知过程中，整合听觉和视觉信息的能力使言语听起来更响亮，更容易理解，并导致更快的处理。这种整合在早期语言发展中很重要，并且在整个生命周期中继续影响言语理解。先前的研究表明，自闭症患者难以整合信息，特别是在多个感觉领域。研究方法：在本研究中，视听言语整合在18名青少年高功能自闭症和19名匹配的青少年与典型的发展，使用噪音中的语音范式进行了调查。计算听觉和视听匹配语音的语音接收阈值，并测量唇读能力。结果如下：与具有典型发展的个体相比，自闭症个体在视听言语知觉中从视觉信息的增加中获益较少。我们还发现，自闭症患者的唇读能力明显比对照组差。分层回归表明，视听条件的组间差异，而听觉感知，特别是唇读的影响，也可归因于一个独特的因素，这可能反映了一个特定的赤字视听整合。结论：自闭症患者视听言语整合和唇读的综合缺陷可能会导致言语理解的持续困难，也可能与早期语言发育的延迟有关。
Background: During speech perception, the ability to integrate auditory and visual information causes speech to sound louder and be more intelligible, and leads to quicker processing. This integration is important in early language development, and also continues to affect speech comprehension throughout the lifespan. Previous research shows that individuals with autism have difficulty integrating information, especially across multiple sensory domains. Methods: In the present study, audiovisual speech integration was investigated in 18 adolescents with high-functioning autism and 19 well-matched adolescents with typical development using a speech in noise paradigm. Speech reception thresholds were calculated for auditory only and audiovisual matched speech, and lipreading ability was measured. Results: Compared to individuals with typical development, individuals with autism showed less benefit from the addition of visual information in audiovisual speech perception. We also found that individuals with autism were significantly worse than those in the comparison group at lipreading. Hierarchical regression demonstrated that group differences in the audiovisual condition, while influenced by auditory perception and especially by lipreading, were also attributable to a unique factor, which may reflect a specific deficit in audiovisual integration. Conclusions: Combined deficits in audiovisual speech integration and lipreading in individuals with autism are likely to contribute to ongoing difficulties in speech comprehension, and may also be related to delays in early language development.