失语症患者口语命名障碍中语义错误的原因初探

<title>uses of semantic errors in Chinese aphasic's oral production

目的从认知神经心理学的角度分析失语症患者口语命名障碍中语义错误的不同机制。方法对2例口语中语义错误的汉语失语症患者,分别通过口语图形命名、图形写名、词／图匹配及图／词核证等测验,检查他们各项任务的正确率及错误模式,分析各自的损伤环节。结果2例患者在口语图形命名任务中正确率相当,并都犯有大量的语义错误,但在几项理解任务中,例1基本正常,而例2的成绩显著偏低。2例所犯的错误性质有所不同。结论 口语图形命名障碍中的语义错误源于不同的损伤环节:例1主要为语义后的输出系统受损,而例2则为中心语义系统受损。

<abstract>jective To analyze the different functional mechanisms underlying the oral production impairment, particularly the semantic errors in aphasic patients on view of cognitive neuropsychological point. Method Various tasks tapped into different modalities were administrated to the two aphasic patients. The patterns of performance were analyzed and compared as to locating the mechanisms of impairments. Results The performance in oral picture naming was comparable to the two patients, but of differences on comprehension tasks the a patient showed relatively intact while a paitent impaired. Detailed analyses on the naming errors were also found consistent with the comprehension data. Conclusion The similarly impaired oral production of the two patients might result from different functional damage - central semantic system for WJX and post-semantic phonological output lexicon for a patient.