首都医科大学学报 ›› 1992, Vol. 13 ›› Issue (2): 105-109.

• 论著 • 上一篇    下一篇

刺激嗅神经诱发的鲫鱼Mauthner细胞兴奋性突触后电位

张英才, 张淑华   

  1. 首都医学院生理学教研室
  • 收稿日期:1990-09-20 修回日期:1900-01-01 出版日期:1992-04-15 发布日期:1992-04-15

EPSP Evoked by Stimulation of the Olfactory Nerve on the Cruian Carp Mauthner Cell

Zhang Yingcai, Zhang Shuhua   

  1. Department of Physiology, Capital Institute of Medicine
  • Received:1990-09-20 Revised:1900-01-01 Online:1992-04-15 Published:1992-04-15

摘要: 直接刺激嗅神经在Mauthner细胞上引起分级的复合兴奋性突触后电位(EPSP)。嗅神经诱发的EPSP包含两个性质不同的成分。第1成分的潜伏期短(平均为0.62ms),持续时间短,对高频率刺激不敏感。第2成分继第1成分之后发生,持续时间长达4 ms以上,为典型的复合波形状,对高频率刺激敏感,当后续刺激的间隔期由27 s缩短至100 ms时,其幅度衰减为原来的40%。

关键词: Mauthner细胞, 嗅神经, 兴奋性突触后电位, 鲫鱼

Abstract: Direct stimulation of the olfactory nerves evoked a graded, complex excitory postsynap-tic potential (EPSP)on the Mauthner cell. The evoked EPSP was composed of two compo-nents with different characterastics. The latency of the first component was shorter with a average of 0. 62 ms and not sensitive to higher frequency stimulations. The second compo-nent closely followed the first one. It lasted more than 4 ms and presented a typical complex waveform. It was very sensitive to higher frequency stimulation; its amplitude declined by 40% while the stimulation interval shortened from 27 s to 100 ms.

Key words: Mauthner cell, olfactory nerve, EPSP, crucian carp

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