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《Chinese Journal of Medical Imaging Technology》 2011-01
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Functional MRI observation on auditory Chinese lexical processing mechanism in left anterior temporal lobe

WANG Xiao-yi1,LU Jie1,LI Kun-cheng1,ZHANG Miao1,XU Guo-qing2,SHU Hua2(1.Department of Radiology,Xuanwu Hospital,Capital Medical University,Beijing 100053,China;2.Beijing Normal University,State Key Laboratory of Cognitive Neuroscience and Learning,Beijing 100875,China)  
Objective To explore the neural mechanism for auditory Chinese lexical processing in the left anterior temporal lobe(ATL) of the healthy participants with functional magnetic imaging(fMRI).Methods Fifteen right-handed healthy participants,including 5 males and 10 females,were asked to repeat the auditory words or judge whether the auditory items were semantically dangerous.AFNI was used to process fMRI data and localize functional areas and the difference in the anterior temporal lobe.Results The results revealed the phonological processing on auditory Chinese lexical information was located in the anterior superior temporal gyrus,and the semantic processing was located in the anterior middle temporal gyrus.There existed segregation between the phonological processing and the semantic processing of the auditory Chinese words.Conclusion There was the function of semantic integration in the ATL.Two pathways to semantic access include the direct pathway in the dorsal temporal lobe for repetition task and the indirect in ventral temporal lobe for semantic judgment task.
【Fund】: 北京市“十百千”卫生人才培养专项经费
【CateGory Index】: R445.2
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