【摘要】 基于弥散张量成像数据和功能磁共振数据,采用概率追踪方法和白质功能连接分析来研究小球类运动员训练引起的大脑结构功能可塑性。本文收集体育教育专业小球类专项学生运动员和相匹配的对照组,分析静息态、DTI和结构磁共振数据,结果发现两组脑白质纤维在小脑,胼胝体、扣带回和额叶发生了差异,这些差异脑区都是和运动相关联,与维持身体平衡、协调随意运动、反应灵敏度等方面密切联系。并且运动员较正常对照来说,脑半球灰质体积的相关性明显提高,说明长期小球类运动能使相应脑区发生改变,运动员具有更强的运动和反应判断能力。白质功能连接分析进一步发现扣带回和双侧丘脑后辐射,以及胼胝体的白质功能连接的增强,暗示运动员具有更强的左右半球白质功能连接及左右半球的视觉区连接,这将帮助运动员更好地进行左右相关脑区的功能协调,特别是运动视觉信息的传递和协调。更多还原

【Abstract】 Based on the diffusion tensor imaging data and resting-state functional magnetic resonance imaging data,the present study aimed to explore the brain structural and functional plasticity in little-ball players using probabilistic tracking and functional connectivity analysis. The little-ball student athletes and matched control people were recruited.The results showed that there were differences between the two groups of white matter fibers in the cerebellum,corpus callosum, cingulate gyrus and frontal lobe.These differential brain regions are all associated with exercise and are closely related to maintaining body balance,coordinating voluntary movements, and sensitivity to response. The correlation of the gray matter volume of the brain hemisphere is significantly improved in the athletes comparing to the controls,indicating that the long-term little-ball exercise can make the corresponding brain area change,with stronger exercise and reaction judgment ability.Further functional connectivity(FC) analysis in white matter showed increased FC between cingulate gyrus and bilateral posterior thalamic radiation and corpus callosum,implying the stronger hemispheric visual area functional connections.This may result in better hemispheric function coordination, especially motor visual information transformation and coordination in athletes.更多还原