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Relationship Between Perisylvian essential language sites and arcuate fasciculus in the Left Hemisphere of Healthy Adults

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Neuroscience Bulletin 2017年第6期33卷 616-626页

作者： Yu Lin Kai Zhang Shuai Li Song Li Jingna Jin Fang Jin Wen Qin Long Hai Meng Zhu Chunshui Yu Zhipeng Liu Tao Yin Xuejun Yang Department of Neurosurgery Tianjin Medical UniversityGeneral HospitalTianjin 300052China Institute of Biomedical Engineering Chinese Academy ofMedical Sciences and Peking Union Medical CollegeTianjin 300192China Department of Radiology and Tianjin Key Laboratory ofFunctional Imaging Tianjin Medical University GeneralHospitalTianjin 300052China Department of Surgery First Teaching Hospital of TianjinUniversity of Traditional Chinese MedicineTianjin 300193China Department of Neurosurgery Affiliated Hospital of QingdaoUniversityShandong 266003China

essential language sites and the arcuate fasciculus（AF） have been extensively researched. However, the relationship between them remains insufficiently studied,especially in healthy people. navigated transcranial magnetic stimulation（n TMS） is increasingly used in language mapping. While enjoying the advantage of non-invasiveness, it is also capable of inducing a virtual lesion in the brain. Thus, it offers the possibility of using the virtuallesion method to study the healthy brain. This study combined n TMS and diffusion tensor imaging（DTI）tractography to investigate the relationship between essential language sites and the AF in 30 healthy right-handedvolunteers. A total of 143 essential language sites were identified using n TMS, and a total of 175 AF terminations were identified using DTI tractography. Sixty-six sites had a direct correlation with the AF, accounting for 46% of the total essential language sites. Forty-seven AF terminations harbored essential language sites, accounting for 27% of the total AF terminations. Upon data rendering to the cortical parcellation system, a region-related heterogeneity of the correlation rate was found. This study provides the first data on the relationship between essential language sites and the AF in healthy adults.

关键词： essential language site arcuate fasciculus navigated transcranial magnetic stimulation diffusion tensor tractography neuroplasticity

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