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| 皮质脑桥小脑系 (由额叶、顶叶、颞叶、枕叶皮质发出的皮质脑桥束经内囊和大脑脚底下行,止于脑桥核。脑桥核发出的纤维交叉至对侧，经小脑中脚进入新小脑皮质。新小脑皮质发出的纤维至齿状核,再由齿状核发出的纤维经小脑上脚交叉至对侧背侧丘脑的腹前核和腹中间核。腹前核和腹中间核发出的纤维组成丘脑前辐射，经内囊前肢投射至额叶皮质。此环路影响大脑皮质运动区的活动。另外，齿状核发出的部分纤维与红核联系,再通过红核脊髓束控制脊髓前角运动神经元的功能活动) | |||
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