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首页> 美国卫生研究院文献>Frontiers in Human Neuroscience >Structural changes in left fusiform areas and associated fiber connections in children with abacus training: evidence from morphometry and tractography
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Structural changes in left fusiform areas and associated fiber connections in children with abacus training: evidence from morphometry and tractography

机译：算盘培训儿童左梭形区域的结构变化和相关的纤维连接：形态学和束线学的证据

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摘要

Evidence supports the notion that the fusiform gyrus (FG), as an integral part of the ventral occipitotemporal junction, is involved widely in cognitive processes as perceiving faces, objects, places or words, and this region also might represent the visual form of an abacus in the abacus-based mental calculation process. The current study uses a combined voxel-based morphometry (VBM) and diffusion tensor imaging (DTI) analysis to test whether long-term abacus training could induce structural changes in the left FG and in the white matter (WM) tracts distribution connecting with this region in school children. We found that, abacus-trained children exhibited significant smaller gray matter (GM) volume than controls in the left FG. And the connectivity mapping identified left forceps major as a key pathway connecting left FG with other brain areas in the trained group, but not in the controls. Furthermore, mean fractional anisotropy (FA) values within left forceps major were significantly increased in the trained group. Interestingly, a significant negative correlation was found in the trained group between the GM volume in left FG and the mean FA value in left forceps major, suggesting an inverse effect of the reported GM and WM structural changes. In the control group, a positive correlation between left FG GM volume and tract FA was found as well. This analysis visualized the group level differences in GM volume, FA and fiber tract between the abacus-trained children and the controls, and provided the first evidence that GM volume change in the left FG is intimately linked with the micro-structural properties of the left forceps major tracts. The present results demonstrate the structural changes in the left FG from the intracortical GM to the subcortical WM regions and provide insights into the neural mechanism of structural plasticity induced by abacus training.
机译：证据支持梭状回（FG）作为腹枕颞交界的组成部分，广泛地参与认知过程，例如感知面部，物体，位置或单词，并且该区域也可能代表算盘的视觉形式在基于算盘的心理计算过程中。当前的研究使用基于体素的形态计量学（VBM）和扩散张量成像（DTI）的组合分析来测试长期算盘训练是否可以诱导左FG和白质（WM）道分布的结构变化地区在校儿童。我们发现，经过算盘训练的儿童比左侧FG的对照组表现出明显较小的灰质（GM）量。并且连通性映射确定左钳主要是将左FG与受过训练的组中的其他大脑区域（而不是对照组）连接的关键途径。此外，在受过训练的组中，左大钳内的平均分数各向异性（FA）值显着增加。有趣的是，在受过训练的组中，左FG的GM体积与左钳大的平均FA值之间存在显着的负相关，这表明所报道的GM和WM结构变化具有相反的影响。在对照组中，还发现左FG GM量与尿道FA之间呈正相关。该分析可视化了算盘训练儿童与对照组之间的GM体积，FA和纤维束的组水平差异，并提供了第一个证据表明左FG的GM体积变化与左微结构特性密切相关钳大片。目前的结果表明，左FG从皮质内GM到皮质下WM区域的结构变化，并为由算盘训练诱导的结构可塑性的神经机制提供了见识。

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