发育性阅读障碍儿童的多音节单词和短语的非典型语音产生
Mahmoud Keshavarzi1, Giovanni M Di Liberto2,3, Fiona Gabrielczyk1
1Centre for Neuroscience in Education, Department of Psychology, University of Cambridge, Cambridge, UK.
Developmental science
|June 29, 2023
概括
患有阅读障碍的儿童在口语生产中表现出不典型的语音节奏,特别是在产生多音节短语的幅度信封中. 他们的语音生产困难可能被完整的音调轮掩盖.
科学领域:
- 语音语言病理学 语言病理学
- 发展心理学是发展心理学.
- 语言学的语言学.
背景情况:
- 阅读障碍的核心语音缺陷模型将阅读/拼写问题与语音处理缺陷联系在一起.
- 阅读障碍患者的口语表达通常看起来很正常,这表明语音输入和输出之间存在脱节.
- 语音节奏,通过语音振幅包裹 (AE) 传达,对于传达压力和语调至关重要.
研究的目的:
- 从语音输出角度研究阅读障碍儿童的语音节奏产生.
- 检查与没有阅读障碍的儿童多音节口语短语的语音振幅 (AE).
主要方法:
- 使用了一种新的计算机语音复制任务,其中75名儿童 (有和没有阅读障碍) 重复熟悉的口语目标.
- 使用相关性和相互信息指标计算了语音振幅 (AE) 的相似性.
- 音调轮相似性被分析为语音节奏感知的控制.
主要成果:
- 与对照组相比,阅读障碍儿童在产生多音节短语的目标AE方面准确性明显低.
- 在患有阅读障碍的儿童和年龄相匹配的对照人群之间,没有观察到音调轮产生的显著差异.
- 这些发现表明,难读症儿童的口语输出具有非典型的语音节奏.
结论:
- 多音节短语的口语表达在患有关于语音幅度包裹 (AE) 障碍阅读症的儿童中是不典型的.
- 语音障碍的语音生产困难可能被完整的音调轮生产所掩盖,使得它们对听众来说不那么明显.
- 这项研究突出显示了语音输出处理中的潜在断开在语音障碍的核心语音缺陷模型.
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