藏族双语者与汉族非双语者脑灰质VBM-MRI的初步研究

目的应用基于体素的形态学测量(voxel-based morphometry,VBM)技术初步探讨第二语言的习得对大脑微观结构的影响。材料与方法应用PHILIPS3.0 T磁共振对35名掌握藏-汉双语的健康藏族志愿者和35名汉族非双语健康志愿者行全脑扫描,获得T1-3D脑结构图像,然后应用VBM技术进行统计分析。结果藏族双语者较汉族左侧中央后回、左侧缘上回、左侧颞上回、右侧颞上回、右侧豆状核、右侧顶下小叶、左侧小脑8区脑灰质体积增加。结论第二语言的习得可以导致部分脑语言区体积的增加,双语学习可以促进脑语言区皮质的发育。

Voxel-based morphometry MRI primary study of brain grey matter between Tibetan bilinguals and Chinese monolinguals

Objective: Voxel-based morphometry (VBM) was applied to investigate the effect of second language acquisition on brain microstructure. Materials and Methods: By PHILIPS 3.0 T magnetic resonance of 35 skilled master Tibetan-Chinese bilinguals Tibetan health volunteers and 35 Chinese monolinguals healthy volunteers underwent whole brain scan, then we applied the VBM technology to analyze the obtained T1-3D brain structural images. Results: Compared to Chinese, Tibetan bilinguals brain areas increased in grey matter volume including: left postcentral gyrus, left supramarginal gyrus, left superior temporal gyrus, right superior temporal gyrus, right putamen, right inferior parietal lobule, cerebellar brain regions. Conclusion: The acquisition of second language can lead to an increase in the volume of some brain language areas, and bilingual learning can promote the development of cortical areas in th brain language.