Vowel Acoustics in Adults With Apraxia of Speech
Vowel Acoustics in Adults With Apraxia of Speech
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DOI：
10.1044/1092-4388(2009/08-0017
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发表时间：
2010-02-01
影响因子：
2.6
通讯作者：
Marquardt, Thomas P.
中科院分区：
文献类型：
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作者：
Jacks, Adam;Mathes, Katey A.;Marquardt, Thomas P.
目的：研究获得性言语失用症（AOS）成年人的元音产生相对于正常人的元音产生更易变的假设。元音共振峰频率测量被选为focus.Method的具体目标：7名成人AOS和失语症产生15个重复的6个美国英语元音/hVC/上下文（隐藏，头，帽子，热，枢纽，hoot）。元音共振峰频率测量值（F1，F2）进行Bark变换，并与档案来源的数据进行比较。结果：AOS说话者的元音声学测量值与未受损说话者的元音声学测量值没有差异，包括绝对Bark共振峰值，元音空间面积，元音间距离和个体试验到试验共振峰变异性。与规范的声学措施的比较表明，元音生产在字的水平是不受损害的，在目前的扬声器与AOS，支持以前的研究表明，元音生产是相对完整的AOS。
Purpose: To investigate the hypothesis that vowel production is more variable in adults with acquired apraxia of speech (AOS) relative to healthy individuals with unimpaired speech. Vowel formant frequency measures were selected as the specific target of focus.Method: Seven adults with AOS and aphasia produced 15 repetitions of 6 American English vowels in /hVC/context (hid, head, hat, hot, hub, hoot). Vowel formant frequency measures (F1, F2) were Bark transformed and compared with data from archival sources.Results: Measures of vowel acoustics in speakers with AOS did not differ from those of unimpaired speakers, including absolute Bark formant values, vowel space area, intervowel distance, and individual trial-to-trial formant variability.Conclusion: Comparison with normative acoustic measures suggested that vowel production at the word level is unimpaired in the current speakers with AOS, supporting previous studies that have shown vowel production is relatively intact in AOS.