【摘要】 用HRP轴突逆行传送法观察了家兔二级前庭小脑纤维的起核。结果表明,也注射微量50％HRP于小脑某些区域之后,前庭复合核各核的标记细胞呈局部定位性分布。如注射前叶的实验,标记细胞主要集中在前庭脊核和外侧核的腹内侧部、前庭内侧核的外侧部和前庭上核的背侧部。注射顶核的实验,标记细胞主要集中在前庭内侧核、上核和脊核的背侧部,外侧核的背外侧部和腹外侧部。此外,全例的同侧前庭神经间介核均有标记细胞。本文并讨论了此系纤维的机能意义。更多还原

【Abstract】 The origin of the secondary vestibulo-cerebellar fibers were investigated in the rabbit by use of retrograde axonal transport of horseradish peroxidase method. The present study shows that, following the injection of small amount of 50% HRP in certain regions of the cerebellum, the labelled neurons were observed distributing topically in the subdivisions of the vestibular nuclear complex. In the experiments of injection into the anterior lobe, the labelled cells were concentrated primarily in the ventro-medial part of the spinal and the lateral vestibular nuclei, in the lateral part of the medial vestibular nucleus and in the dorsal part of the superior vestibular nucleus. After injection into the fastigial nuclcus, the labelled neurons were centered chiefly in the dorsal part of the medial, superior and spinal vestibular nuclei and in the dorso-lateral and the ventro-lateral part of the lateral vestibular nucleus. In addition, the labelled cells were found ipsilateratly in the interstitial nucleus of the vestibular nerve in all cases. The functional significance of this fiber system is discussed.更多还原