Phonological simplifications, apraxia of speech and the interaction between phonological and phonetic processing
Phonological simplifications, apraxia of speech and the interaction between phonological and phonetic processing
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DOI：
10.1016/j.neuropsychologia.2015.03.007
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发表时间：
2015-05-01
期刊：
影响因子：
2.6
通讯作者：
Romani, Cristina
中科院分区：
文献类型：
--
作者：
Galluzzi, Claudia;Bureca, Ivana;Romani, Cristina
失语症的研究一直在努力将言语失用症（AoS）确定为一种独立的缺陷，影响独立于语音组装和运动执行的处理水平。这是因为AoS的特点是语音和语音错误，因此，可以解释为语音和运动水平的缺陷的组合，而不是作为一个独立的障碍。我们采用新颖的心理语言学分析的感知语音错误的24名意大利失语症患者。我们发现，只有语音错误率相对较高（> 10%）的患者才会出现语音错误，从而简化了目标语音。此外，简化与发音困难的其他变量（如辅音而不是元音的错误占主导地位）密切相关，但与其他指标（如正确重现单词的比率或词汇错误的比率）无关。这些结果表明，语音错误不会出现在单一的语音水平，因为他们是不同的患者。相反，不同的模式：（1）提供证据证明存在独立的障碍和介于语音选择和运动执行之间的发音规划/编程水平;（2）验证AoS作为该水平的独立障碍，其特征是语音错误和语音简化;（三）支持语言复杂性原则具有发音基础的主张，因为它们仅适用于具有相关发音的患者。困难(C)2015作者爱思唯尔有限公司出版
Research on aphasia has struggled to identify apraxia of speech (AoS) as an independent deficit affecting a processing level separate from phonological assembly and motor implementation. This is because AoS is characterized by both phonological and phonetic errors and, therefore, can be interpreted as a combination of deficits at the phonological and the motoric level rather than as an independent impairment. We apply novel psycholinguistic analyses to the perceptually phonological errors made by 24 Italian aphasic patients. We show that only patients with relative high rate (> 10%) of phonetic errors make sound errors which simplify the phonology of the target. Moreover, simplifications are strongly associated with other variables indicative of articulatory difficulties - such as a predominance of errors on consonants rather than vowels - but not with other measures - such as rate of words reproduced correctly or rates of lexical errors. These results indicate that sound errors cannot arise at a single phonological level because they are different in different patients. Instead, different patterns: (1) provide evidence for separate impairments and the existence of a level of articulatory planning/programming intermediate between phonological selection and motor implementation; (2) validate AoS as an independent impairment at this level, characterized by phonetic errors and phonological simplifications; (3) support the claim that linguistic principles of complexity have an articulatory basis since they only apply in patients with associated articulatory difficulties. (C) 2015 The Authors. Published by Elsevier Ltd.