Evaluation of the effective connectivity of the dominant primary motor cortex during bimanual movement using Granger causality
Evaluation of the effective connectivity of the dominant primary motor cortex during bimanual movement using Granger causality
复制标题
使用格兰杰因果关系评估双手运动期间主导初级运动皮层的有效连接
DOI：
10.1016/j.neulet.2008.07.036
复制
发表时间：
2008-09-26
影响因子：
2.5
通讯作者：
Gong, Qiyong
中科院分区：
文献类型：
--
作者：
Gao, Qing;Chen, Huafu;Gong, Qiyong
以6名右利手受试者为研究对象，采用格兰杰因果关系分析方法，以左初级运动皮层（PMC）为参照区域，对左初级运动皮层（PMC）激活体素与大脑其他部位的有效连接进行了研究。结果表明，双手运动时，左右PMC之间存在相互作用，格兰杰因果关系图显示了可能的因果关系。辅助运动区（SMA）和小脑在双手运动过程中相对于左PMC被预激活，证实了先前关于SMA和小脑在手运动中的功能的定性结果。(C)2008爱思唯尔爱尔兰有限公司保留所有权利。
Granger causality analysis of the whole brain, voxel-by-voxel, was applied to six right-handed subjects performing a classic bimanual movement, to describe the effective connectivity between the activated voxels in the left primary motor cortex (PMC) and other parts of the brain, by choosing the left PMC as a reference region. The results demonstrated that the left and right PMC interact during bimanual movement, and Granger causality mapping implied a possible cause-effect relationship. The supplementary motor area (SMA) and cerebellum were pre-activated during bimanual movement relative to the left PMC, confirming the prior qualitative results concerning the functions of the SMA and cerebellum in hand movements. (C) 2008 Elsevier Ireland Ltd. All rights reserved.