When words don't come easily: A latent trait analysis of impaired speech motor planning in patients with apraxia of speech

When words don't come easily: A latent trait analysis of impaired speech motor planning in patients with apraxia of speech
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当言语不易表达时:言语失用症患者言语运动计划受损的潜在特征分析

DOI:
10.1016/j.wocn.2016.10.002
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发表时间:
2017
期刊:
J. Phonetics
影响因子:
--
通讯作者:
Staiger
Staiger
中科院分区:
--
文献类型:
--
作者:
Ziegler;Aichert;Staiger

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言语失用症(AOS)是一种由左半球中风引起的言语障碍,被认为是研究言语运动计划组织的临床模型。早期基于 AOS 语音错误数据的非线性手势 (NLG) 单词生成模型可了解单词语音计划的结构(Ziegler & Aichert,2015),但缺点是不允许进行单例测试。这里提出的潜在特征方法通过允许评估单个非标准单词产生模式符合 NLG 框架的程度来补充该模型。言语规划能力的 Rasch 模型是使用来自 33 个临床病例的 2 次检查(每项检查 114 个德语单词)的准确性数据计算的。患者样本的病例拟合参数显示所有病例的模型高度一致。在模拟研究中,对反映五种不同错误机制的响应模式的模拟案例进行了检查:随机、基于词频、基于音节数、基于辅音数和基于 NLG。 Rasch 模型中包含的模拟案例表明,只有 NLG 模拟与反映言语运动规划能力的潜在特征兼容。我们的方法提供了一个强大的工具来测试观察到的声音产生障碍模式是否符合 AOS 模式。在 AOS 被视为获得言语规划能力的临床模型的前提下,该框架允许测试有关易于发音的语音基础的特定假设。
Apraxia of speech (AOS), a speech impairment caused by left hemisphere stroke, is considered as a clinical model to study the organization of speech motor plans. An earlier nonlinear gestural (NLG) model of word production based on AOS speech error data informs about the structure of phonetic plans of words (Ziegler & Aichert, 2015), but with the disadvantage that it does not allow for single case testing. The latent trait approach presented here complements this model by permitting assessment of the extent to which an individual non-standard word production pattern conforms to the NLG framework.A Rasch model of speech planning ability was calculated using accuracy data from 2 examinations each of 33 clinical cases on 114 German words. Case fit parameters of the patient sample revealed high model conformity of all cases. In simulation studies, simulated cases with response patterns reflecting five different error mechanisms were examined: random, word frequency based, syllable number based, consonant number based, and NLG based. Inclusion of simulated cases in the Rasch model revealed that only the NLG simulation was compatible with the latent trait reflecting speech motor planning ability.Our approach provides a powerful tool to test whether an observed pattern of sound production impairment conforms to the AOS pattern. Under the premise that AOS is considered as a clinical model of acquired speech planning abilities, this framework allows for the testing of specific hypotheses concerning the phonetic basis of ease-of-articulation.
语音计划的架构建模:言语失用症的证据
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
W. Ziegler
通讯作者: W. Ziegler
通过镜像神经元系统对语言的动作:声道手势动作单元在理解音系进化中的作用
DOI: --
发表时间: 2006
期刊:
影响因子: --
作者:
L. Goldstein;D. Byrd;E. Saltzman
通讯作者: E. Saltzman
言语失用症中字长效应的非线性模型
DOI: --
发表时间: 2005
影响因子: 3.4
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通讯作者: W. Ziegler
DOI: --
发表时间: 2008
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影响因子: --
作者:
A. Staiger;W. Ziegler
通讯作者: W. Ziegler
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发表时间: 2007
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影响因子: --
作者:
Udo Strauss;P. Grzybek;G. Altmann
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