《中国康复理论与实践》

《中国康复理论与实践》 ›› 2004, Vol. 10 ›› Issue (03): 141-143.

• 专题 • 上一篇    下一篇

轻度认知功能损害患者汉语双词素词的语音编码研究

杨晓娜1; 王荫华1; 周晓林2   

  1. 1.北京大学第一医院神经内科 北京市 100034;2.北京大学心理学系 北京市 100871
  • 收稿日期:2004-02-12 出版日期:2004-03-25 发布日期:2004-03-25

Study of phonological encoding of Chinese disyllabic compound words in patients with mild cognitive impairment

YANG Xiao-na,WANG Yin-hua, ZHOU Xiao-lin   

  1. Department of Neurology, First Hospital,Peking University,Beijing 100034, China
  • Received:2004-02-12 Published:2004-03-25 Online:2004-03-25

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被引次数

19

摘要： 目的探讨轻度认知功能损害(MCI)患者汉语言语产生中双词素词语音激活的特点。方法对10例MCI患者和10例正常对照采用同音判断方法,选用以偏正结构的双词素词为名称的图片和与双词素词中首尾两个词素同音的两组探测字作为实验材料,探测字在图片呈现后100ms出现,要求被试判断出现的探测字是否与图片名称中任何一个词素同音。对两组的反应时和错误率进行比较。结果正常老年人尾词素激活快于首词素激活,而MCI患者首尾词素激活时间无明显差异。首尾词素探测条件下正常老年人反应的错误率无明显差异,而MCI患者对尾词素探测条件的错误率低于首词素。结论正常老年人和MCI患者汉语言语产生中双词素词语音编码模式相同,均受词义和词素意义激活程度的影响;但激活的速度MCI患者慢于正常老年人。提示MCI患者语义记忆和语音提取的过程受损。

关键词: 轻度认知功能损害(MCI), 语音编码, 同音判断, 语义记忆

Abstract: ObjectiveTo explore the characteristics of phonological encoding of Chinese disyllabic compound words in patients with mild cognition impairment(MCI). Methods10 patients with MCI and 10 normal controls who matched with the age, gender, level of education and handedness performed homophone judgment task. In this task, a picture with a disyllabic compound name was presented, after 100 ms of the presentation there would be a Chinese character below the picture. Subjects were asked to judge whether one of the morpheme in the picture name was homophonic to the character. The reaction time and error ratio were analyzed statistically. ResultsIn the normal controls, the reaction time for the second constituents was shorter than that for the first constituents, while there were no difference between the first and second constituents reaction time in MCI patients. The error ratio of the first and second constituents showed no difference in normal controls, but MCI patients made more error rate for the first constituents. ConclusionAs the heathy elderly,the MCI patients have same pattern in phonological coding of Chinese disyllabic compound words, but much slower in activation speed, indicating the impairment of semantic memory and phonological activation in patients with MCI.

Key words: mild cognitive impairment (MCI), phonological encoding, homophone judgment, semantic memory