首都医科大学学报 ›› 1995, Vol. 16 ›› Issue (3): 176-179.

• 论著 • 上一篇    下一篇

鲫鱼迷叶与Mauthner细胞关系的电生理研究

张茂先, 虞棻, 张淑华, 杨海萍   

  1. 首都医学院生理学教研室
  • 收稿日期:1994-06-27 修回日期:1900-01-01 出版日期:1995-07-15 发布日期:1995-07-15

Electrophysiological Study of Relationship between the Crucian Carp Vagal Lobe and Mauthner Cell

Zhang Maoxian, Yu Fen, Zhang Shuhua, Yang Haiping   

  1. Department of Physiology, Capital Institute of Medicine
  • Received:1994-06-27 Revised:1900-01-01 Online:1995-07-15 Published:1995-07-15

摘要: 刺激鲫鱼的迷叶,在Mauthner细胞内记录到潜伏期不同的两类动作电位。第1类潜伏期较长(0.4~0.5ms),动作电位发生前首先引起分级兴奋性突触后电位(EPSP),当刺激强度增大到一定程度时爆发动作电位;第2类动作电位潜伏期短(0.2~0.3ms),动作电位发生前记录不到EPSP.实验结果揭示:迷叶与M细胞之间可能存在双向神经纤维联系,一种是迷叶发出的神经纤维与M细胞构成突触联系,另一种是M细胞发出的神经纤维与迷叶发生突触联系。

关键词: Mauthner细胞, 迷叶, 动作电位, 鲫鱼

Abstract: Direct stimulation of the crucian carp vagal lobe evoked two action potentials with different latencies in the Mauthner cell. One had a relatively long latency (0.4~0.5 ms). Stimulation of the vagal lobe at weak strength evoked a graded excitatory postsynaptic potential (EPSP). The other had a shorter latency (0.2~ 0.3 ms). Stimulation of the vagal lobe evoked directly an action potential. The results suggest that there might be a mutual nerve relationship between the vagal lobe and Mauthner cell. First ,there are inputs from the vagal lobe to Mauthner cell. Second ,there are inputs from Mauthner cell to the vagal lobe.

Key words: Mauthner cell, vagal lobe, action potential, crucian carp

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