词频和模态对失语症患者句子理解障碍的影响。
Effects of word frequency and modality on sentence comprehension impairments in people with aphasia.
机构信息
University of Arizona, Tucson, USA.
出版信息
Am J Speech Lang Pathol. 2012 May;21(2):S103-14. doi: 10.1044/1058-0360(2012/11-0082). Epub 2012 Jan 31.
PURPOSE
It is well known that people with aphasia have sentence comprehension impairments. The present study investigated whether lexical factors contribute to sentence comprehension impairments in both the auditory and written modalities using online measures of sentence processing.
METHOD
People with aphasia and non brain-damaged controls participated in the experiment (n = 8 per group). Twenty-one sentence pairs containing high- and low-frequency words were presented in self-paced listening and reading tasks. The sentences were syntactically simple and differed only in the critical words. The dependent variables were response times for critical segments of the sentence and accuracy on the comprehension questions.
RESULTS
The results showed that word frequency influences performance on measures of sentence comprehension in people with aphasia. The accuracy data on the comprehension questions suggested that people with aphasia have more difficulty understanding sentences containing low-frequency words in the written compared to auditory modality. Both group and single-case analyses of the response time data also indicated that people with aphasia experience more difficulty with reading than listening.
CONCLUSION
Sentence comprehension in people with aphasia is influenced by word frequency and presentation modality.
目的
众所周知，失语症患者存在句子理解障碍。本研究使用句子处理的在线测量方法，调查了词汇因素是否会导致听觉和书面模态中的句子理解障碍。
方法
失语症患者和非脑损伤对照者参加了实验（每组 8 人）。在自定步调的听力和阅读任务中呈现了 21 对包含高、低频词的句子对。句子结构简单，仅在关键词上有所不同。因变量是句子关键部分的反应时间和理解问题的准确性。
结果
结果表明，词频会影响失语症患者句子理解的表现。理解问题的准确性数据表明，与听觉模态相比，失语症患者在书面模态中理解低频词句子更困难。反应时数据的组内和单病例分析也表明，失语症患者阅读比听力更困难。
结论
失语症患者的句子理解受到词频和呈现模态的影响。
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