Topographical organization of ascending cerebellar projections from the dentate and interposed nuclei in Macaca mulatta: An anterograde degeneration study
Topographical organization of ascending cerebellar projections from the dentate and interposed nuclei in Macaca mulatta: An anterograde degeneration study
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猕猴齿状核和插入核的上升小脑投射的地形组织：一项顺行性变性研究
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发表时间：
1980
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通讯作者：
G. B. Stanton
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作者：
G. B. Stanton
在猴猕猴的齿状和小脑间核中放置离散的电解损伤，并使用 Wiitanen 技术在臂结膜的升肢中追踪顺行变性。齿状核和前间核（IA）在地形上投射到红核和丘脑腹外侧-腹侧中间核（VL-Vim）的两个躯体组织部分上。齿状尾部投射到小细胞红核（RNpc）和 VL-Vim 内侧部分的面对区域，头外侧部分投射到这些核中的中央臂区域。在 RNpc 和 VL 中，从前腹侧齿状到外侧后肢区域有一个小的投影。齿状的背侧部分仅投射到 RNpc 和 VLc-Vim（远端肢体肌肉组织区域）的腹侧部分，而齿状的腹侧部分投射到 RNpc 的背侧部分，并与腹侧背内侧 VLc（近肢肌肉组织和运动前区域）有一些重叠。 IA 的尾部投射到前肢内侧，喙部投射到大细胞红核 (RNmc) 和 VL-Vim 的外侧后肢区域。从 IA 到 VL-Vim 远端肌肉组织区域的投影最大。无法明确识别从间后核 (IP) 到红核的投影，但到 VL-Vim 的投影是到近端后肢肌肉组织和运动前区域。
Discrete electrolytic lesions were placed in the dentate and interpositus cerebellar nuclei in the monkey Macaca mulatta and anterograde degeneration was traced in the ascending limb of the brachium conjunctivum using the Wiitanen technique. The dentate and interpositus anterior (IA) nuclei project topographically onto the two somatotopically organized divisions of the red nucleus and the ventrolateral‐ventral intermediate nuclei of the thalamus (VL‐Vim). Caudal parts of the dentate project to face areas in medial parts of the parvocellular red nucleus (RNpc) and VL‐Vim, rostrolateral parts to central arm areas in these nuclei. There is a small projection from the rostroventral dentate to lateral hindlimb areas in RNpc and VL. Dorsal parts of the dentate project to ventral parts of RNpc and VLc‐Vim (distal limb musculature area) exclusively, whereas ventral parts of the dentate project to dorsal parts of RNpc with some overlap ventrally dorsomedial VLc (proximal limb musculature and premotor areas). Caudal parts of IA project to medial forelimb and rostral parts to lateral hindlimb areas in the magnocellular red nucleus (RNmc) and VL‐Vim. Projections from IA are greatest to distal musculature areas in VL‐Vim. No projections from the interpositus posterior nucleus (IP) to the red nucleus could be identified positively, but projections to VL‐Vim are to proximal hindlimb musculature and premotor areas.