说普通话的帕金森病患者的对比应激:任务效应在知觉产生和知觉保留中的作用

IF 1.2 3区 心理学 Q2 LINGUISTICS
Xi Chen, Diana Sidtis
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引用次数: 0

摘要

帕金森氏病(PD)患者的语言以韵律受损为特征(例如,单调、异常语速、响度降低)。大多数关于PD韵律异常的研究都是从说非声调语言的个体中获得的,其中韵律对比不能系统地促进词汇意义。在普通话等声调语言中,音高不仅承载着情感信息,而且还起到区分词汇意义的作用。目前尚不清楚说声调语言的PD患者在生产话语时如何很好地传达对比重音(特定的语调线索,表明话题和主题),或者他们如何很好地感知这些对比。方法实验1研究了PD患者使用不同的语音任务:引出和重复对普通话的对比应激的产生。PD组和健康组在两种任务条件下分别产生了不同位置的短句。作为对参与者产生对比重音质量的间接测量,健康的听者作为评分者识别句子中的焦点位置,并为每个产生对比重音提供良好评级。实验2考察知觉能力,通过听健康人话语的对比重音来测量PD参与者的识别能力。结果对于生产研究(实验1),结果显示PD组在引出和重复方面的表现明显低于HC组。与之前的研究一致,发现了任务效应;研究参与者在重复方面的表现优于启发。实验2的知觉能力测试结果显示,PD和HC被试同样成功地感知健康说话者的普通话话语中的对比应激。本研究通过测量说声调语言的PD患者的对比应激的产生和感知,扩展了先前的文献。对比应激被检测到与PD患者相比,PD患者的言语准确性降低。然而,与启发条件相比,重复条件下的表现相对较好。与生产结果相反,PD患者在感知句子焦点方面与HC患者一样成功,这与先前报道PD患者的生产和感知之间存在差异的研究一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Contrastive stress in persons with Parkinson's disease who speak Mandarin: Task effect in production and preserved perception

Background

Speech in persons with Parkinson's disease (PD) is characterized by impaired prosody (e.g., monotone, abnormal rate, reduced loudness). Most studies on prosodic abnormalities in PD have been obtained from individuals who speak non-tone languages, where prosodic contrasts do not systematically contribute to lexical meanings. In a tone language such as Mandarin, pitch not only carries affective information but also serves to distinguish lexical meanings. It is not known how well persons with PD, who speak a tone language, convey contrastive stress (specific intonational cues signaling topic and theme) for discourse purposes in production, or how well they perceive these contrasts.

Method

Experiment 1 investigated production of contrastive stress by persons with PD who speak Mandarin using two different speech tasks, Elicitation and Repetition. PD participants and healthy controls (HC) produced short sentences with focus in different positions during the two task conditions. As an indirect measurement of the quality of the participants’ production of contrastive stress, healthy listeners served as raters to identify focus positions in the sentences and provide goodness ratings to each produced contrastive stress. Experiment 2 examined perceptual ability, measuring PD participants' identification through listening of contrastive stress on utterances produced by a healthy speaker.

Results

For the Production Study (Experiment 1), the results revealed significantly poorer performance in the PD than the HC group in Elicitation and Repetition. Consistent with previous studies, a task effect was found; study participants demonstrated better performance in Repetition than in Elicitation. Results for the examination of perceptual ability in Experiment 2 revealed that PD and HC participants were equally successful in perceiving contrastive stress in Mandarin utterances produced by a healthy speaker.

Discussion

This study extended previous literature by measuring production and perception of contrastive stress in persons with PD who speak a tone language. Contrastive stress was detected with decreased accuracy in speech produced by persons with PD compared to healthy controls. However, performance was relatively preserved in a repetition condition compared to an elicitation condition. In contrast to the production results, speakers with PD were as successful as HC in perceiving sentential focus, consistent with previous research reporting a discrepancy between production and perception in persons with PD.

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来源期刊
Journal of Neurolinguistics
Journal of Neurolinguistics 医学-神经科学
CiteScore
3.90
自引率
5.00%
发文量
49
审稿时长
17.2 weeks
期刊介绍: The Journal of Neurolinguistics is an international forum for the integration of the neurosciences and language sciences. JNL provides for rapid publication of novel, peer-reviewed research into the interaction between language, communication and brain processes. The focus is on rigorous studies of an empirical or theoretical nature and which make an original contribution to our knowledge about the involvement of the nervous system in communication and its breakdowns. Contributions from neurology, communication disorders, linguistics, neuropsychology and cognitive science in general are welcome. Published articles will typically address issues relating some aspect of language or speech function to its neurological substrates with clear theoretical import. Interdisciplinary work on any aspect of the biological foundations of language and its disorders resulting from brain damage is encouraged. Studies of normal subjects, with clear reference to brain functions, are appropriate. Group-studies on well defined samples and case studies with well documented lesion or nervous system dysfunction are acceptable. The journal is open to empirical reports and review articles. Special issues on aspects of the relation between language and the structure and function of the nervous system are also welcome.
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