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海葵Calliactis parasitica(库奇)外胚层慢传导系统中冲动的传递。

The transmission of impulses in the ectodermal slow conduction system of the sea anemone Calliactis parasitica (Couch).

作者信息

Shelton G A

出版信息

J Exp Biol. 1975 Apr;62(2):421-32. doi: 10.1242/jeb.62.2.421.

DOI:10.1242/jeb.62.2.421
PMID:1457
Abstract
  1. The SS 1 fatigues in response to repetitive electrical stimulation. This fatigue is manifested by an increased conduction delay and a decreased SS 1 pulse amplitude. 2. Continued repetitive stimulation leads to the failure of the system. Recovery may take many seconds. Narrow strips of column fail more rapidly than wide strips. 3. The increased conduction delay is explained in terms of a decrease in the population of spiking cells. 4. A computer model is described and analysed. It suggests that conduction between electrically coupled ectoderm cells could be the basis for the SS1. The SS 1 may have properties not so far experimentally demonstrated; for example, under certain conditions it could behave as a local system.
摘要
  1. SS1 对重复性电刺激产生疲劳。这种疲劳表现为传导延迟增加和 SS1 脉冲幅度降低。2. 持续的重复性刺激会导致系统失效。恢复可能需要数秒时间。窄条柱状结构比宽条柱状结构失效更快。3. 传导延迟增加是由于产生动作电位的细胞数量减少所致。4. 描述并分析了一个计算机模型。该模型表明,电耦合外胚层细胞之间的传导可能是 SS1 的基础。SS1 可能具有迄今尚未通过实验证明的特性;例如,在某些条件下它可能表现为一个局部系统。

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