摘要
本文将辣根过氧化物酶(HRP)溶液注入家鸽的耳蜗内,应用HRP顺行轴突传递追踪法对耳蜗主核(nCo)进行了定位研究。结果在下列区域观察到顺行的纤维和终末标记:①在同侧的听神经(NVⅢ)有大量密集标记的神经纤维束并分别终止于nCo的两个亚核——延髓的角状核(NA)和巨细胞核(NM)。②在同侧的角状核有密集成簇的标记终末。③在同侧的巨细胞核有中等量的标记终末。结果说明非鸣禽家鸽的耳蜗纤维组成听神经后,分别投射至同侧的角状核和巨细胞核,延髓的NA和NM是组成耳蜗主核的两个亚核,nCo是听觉上行通路中在脑内的第一级神经元的转换站,延髓的层状核(NL)并不接受耳蜗纤维的直接投射。
The location of nucleus cochlea was investigated in adult pigeon. Methods used were anterograde transport of horseradish peroxidase(HRP). After HRP was injected into the left and right cochlears respectively, anterograde label were observed in the following regions: I. Some dense labelled fibers of the eighth nerve(NⅧ) enter nucleus angularis(NA), the others enter nucleus magnocellularis(NM). 2. There are some dense anterograde label appear in NA and NM. The results show that NⅧ which from cochlear neuron projects to ipsilateral NM and NA, which make up the cochlear nuclei(riCo), the first neuron relay station of the auditory pathway. The nucleus lamnaris(NL) receives no projections from NⅧ.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
1992年第3期82-86,共5页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金
关键词
耳蜗主核
家鸽
HRP顺行追踪
HRP cochlear nucleus cochlea aduition Pigeon.
