视被盖兴奋性输入在Mauthner细胞腹侧树突上的分布

首都医科大学学报 ›› 2000, Vol. 21 ›› Issue (1): 1-4.

视被盖兴奋性输入在Mauthner细胞腹侧树突上的分布

李效义, 童学红, 张淑华, 陈哲, 高娜, 虞棻, 张茂先, 张英才

首都医科大学生理学教研室

收稿日期:1999-06-16 修回日期:1900-01-01 出版日期:2000-01-15 发布日期:2000-01-15

Distribution of Excitatory Inputs from the Optic Tectum on the Ventral Dendrite of the Mauthner Cell

Li Xiaoyi, Tong Xuehong, Zhang Shuhua, Chen Zhe, Gao Na, Yu Fen, Zhang Maoxian, Zhang Yingcai

Department of Physiology, Capital University of Medical Sciences

Received:1999-06-16 Revised:1900-01-01 Online:2000-01-15 Published:2000-01-15

摘要/Abstract

摘要： 用多点胞内记录方法,在鲫鱼Mauthner细胞(M细胞)胞体和腹侧树突探测了逆向动作电位和刺激视被盖诱发的兴奋性突触后电位(简称视被盖EPSP)的分布情况。结果表明,逆向动作电位的幅度在胞体处最大,沿腹侧树突逐渐衰减;视被盖EPSP在胞体处的幅度较小,沿腹侧树突逐渐增加。提示：视被盖输入集中投射在腹侧树突近末梢端。

关键词: Mauthner细胞, 腹侧树突, 视被盖, 鲫鱼

Abstract: Distribution of the antidromic action potential evoked by the stimulation of the spinal cord (AAPSC) and EPSP evoked by the stimulation of the optic tectum (EPSPOT) on the soma and ventral dendrite of the crucian carp Mauthner cell was explored by means of multiple intracellular recording technique. The results showed that the maximum amplitude of the AAPSC was recorded at the soma, it declined progressively along the ventral dendrite. The minimum amplitude of EPSPOT was recorded at the soma, it increased gradually along the ventral dendrite and declined gradually near the end of the ventral dendrite. It suggested that the optic tectum inputs concentrated and impinged on the sites near the end of the ventral dendrite.

Key words: Mauthner cell, ventral dendrite, optic tectum, crucian carp

中图分类号:

Q426

李效义;童学红;张淑华;陈哲;高娜;虞棻;张茂先;张英才. 视被盖兴奋性输入在Mauthner细胞腹侧树突上的分布[J]. 首都医科大学学报, 2000, 21(1): 1-4.

Li Xiaoyi;Tong Xuehong;Zhang Shuhua;Chen Zhe;Gao Na;Yu Fen;Zhang Maoxian;Zhang Yingcai. Distribution of Excitatory Inputs from the Optic Tectum on the Ventral Dendrite of the Mauthner Cell[J]. Journal of Capital Medical University, 2000, 21(1): 1-4.

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