Dresden University of Technology, Dresden, Germany.
J Speech Lang Hear Res. 2010 Aug;53(4):836-49. doi: 10.1044/1092-4388(2009/08-0216). Epub 2009 Dec 22.
Speech produced by individuals with hypokinetic dysarthria associated with Parkinson's disease (PD) is characterized by a number of features including impaired speech prosody. The purpose of this study was to investigate intonation contrasts produced by this group of speakers.
Speech materials with a question-statement contrast were collected from 14 Cantonese speakers with PD. Twenty listeners then classified the productions as either questions or statements. Acoustic analyses of F0, duration, and intensity were conducted to determine which acoustic cues distinguished the production of questions from statements, and which cues appeared to be exploited by listeners in identifying intonational contrasts.
The results show that listeners identified statements with a high degree of accuracy, but the accuracy of question identification ranged from 0.56% to 96% across the 14 speakers. The speakers with PD used similar acoustic cues as nondysarthric Cantonese speakers to mark the question-statement contrast, although the contrasts were not observed in all speakers. Listeners mainly used F0 cues at the final syllable for intonation identification.
These data contribute to the researchers' understanding of intonation marking in speakers with PD, with specific application to the production and perception of intonation in a lexical tone language.
与帕金森病（PD）相关的运动障碍性构音障碍患者的言语具有多个特征，包括言语韵律受损。本研究的目的是调查该组患者产生的语调对比。
从 14 名讲粤语的 PD 患者中收集具有问题-陈述对比的言语材料。然后，20 名听众将这些发音分类为问题或陈述。进行 F0、时长和强度的声学分析，以确定哪些声学线索可以区分问题和陈述的产生，以及哪些线索似乎被听众用于识别语调对比。
结果表明，听众可以非常准确地识别陈述，但在 14 名患者中，问题识别的准确率从 0.56%到 96%不等。PD 患者使用与非构音障碍的粤语患者相似的声学线索来标记问题-陈述对比，尽管并非所有患者都观察到这种对比。听众主要使用最后一个音节的 F0 线索来进行语调识别。
这些数据有助于研究人员了解 PD 患者的语调标记，特别是对声调语言中语调的产生和感知具有特定的应用。
