猴前肢低阈值肌肉传入纤维向楔束核主核和楔束外侧核的投射。

The projection of low-threshold muscle afferents of the forelimb to the main and external cuneate nuclei of the monkey.

作者信息

Hummelsheim H, Wiesendanger R, Wiesendanger M, Bianchetti M

出版信息

Neuroscience. 1985 Dec;16(4):979-87. doi: 10.1016/0306-4522(85)90110-1.

Abstract

The bulbar relay subserved by primary muscle afferents from the monkey's deep radial nerve was investigated by means of transganglionic labeling with wheatgerm agglutinin conjugated with horseradish peroxidase as well as by electrophysiological techniques. It was found that the "deep" input was confined to the pars triangularis of the main cuneate nucleus and to the ventromedial segment of the external cuneate nucleus. On the other hand, labeling occurring following incubation of the superficial (cutaneous) branch of the radial nerve was limited to the pars rotunda of the main cuneate nucleus. The cytoarchitectonic differentiation of the medullary relays is thus met by a clear-cut submodality segregation.

摘要

采用与辣根过氧化物酶结合的麦胚凝集素进行跨神经节标记以及电生理技术，对来自猴桡神经深部的初级肌肉传入纤维所支配的延髓中继进行了研究。结果发现，“深部”输入局限于主楔束核的三角部和楔外侧核的腹内侧段。另一方面，桡神经浅（皮）支孵育后出现的标记仅限于主楔束核的圆形部。因此，延髓中继的细胞构筑分化表现为明显的亚模态分离。