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首页> 外文期刊>Journal of speech, language, and hearing research: JSLHR >Error variability and the differentiation between apraxia of speech and aphasia with phonemic paraphasia
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Error variability and the differentiation between apraxia of speech and aphasia with phonemic paraphasia

机译：语音变异性和语音失语与失语症的语音变异性差异

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Purpose: This study was conducted to evaluate the clinical utility of error variability for differentiating between apraxia of speech (AOS) and aphasia with phonemic paraphasia. Method: Participants were 32 individuals with aphasia after left cerebral injury. Diagnostic groups were formed on the basis of operationalized measures of recognized articulatory and prosodic characteristics of AOS and phonemic paraphasia. Sequential repetitions of multisyllabic words were elicited as part of a motor speech evaluation and transcribed phonetically. Four metrics of variability at the syllable and word levels were derived from these transcripts. Results: The measures yielded different magnitudes of variability. There were no group differences between participants who displayed speech profiles consistent with AOS and participants who displayed speech profiles indicative of aphasia with phonemic paraphasia. Rather, correlation coefficients and analyses of covariance showed that the variability metrics were significantly mediated by overall error rate. Additionally, variability scores for individuals with salient diagnoses of AOS and conduction aphasia were inconsistent with current diagnostic guidelines. Conclusions: The results do not support diagnostic validity of error variability for differentiating between AOS and aphasia with phonemic paraphasia. Future research using error variability metrics should account for overall error rate in the analysis and matching of participant groups.
机译：目的：本研究旨在评估误差变异性在区分语言失用（AOS）和语音性失语症失语症的临床应用。方法：参与者为32名左脑损伤后失语症患者。诊断组是根据公认的AOS的发音和韵律特征以及音位偏瘫的操作性措施而成立的。多音节单词的顺序重复被引作运动语音评估的一部分，并进行语音转录。从这些成绩单中得出了四个音节和单词级别的变异性度量。结果：度量产生了不同程度的变异性。在显示与AOS一致的语音特征的参与者与显示表示语音失语伴语音性偏瘫的参与者之间没有群体差异。相反，相关系数和协方差分析表明，总体误差率显着介导了变异性指标。另外，对AOS和传导性失语症进行明显诊断的个体的变异性评分与当前的诊断指南不一致。结论：该结果不支持误差变异性在区分AOS和音位性失语的AOS和失语中的诊断有效性。未来使用误差可变性度量的研究应在分析和匹配参与者组时考虑总体误差率。

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