MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON.
MEMBRANE AND PROTOPLASM RESISTANCE IN THE SQUID GIANT AXON.
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DOI：
10.1085/jgp.22.5.671
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发表时间：
1939-05-20
期刊：
影响因子：
--
通讯作者：
Hodgkin AL
中科院分区：
文献类型：
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作者：
Cole KS;Hodgkin AL
测量了鱿鱼巨轴突的直流纵向电阻作为电极间距的函数。使用大型海水电极并将电极间长度浸入油中。对于较小的电极间距，电阻与间距曲线的斜率较大，但随着间距的增加而变小并最终保持恒定。对电阻与长度曲线的分析得出以下结果。神经膜的电阻约为1000欧姆·厘米2。原生质的电阻率约为海水的1.4倍。纤维外部结缔组织鞘的电阻相当于一层厚度约为20μ的海水。轴突的特征长度约为 2.3 毫米。在油中和 6.0 毫米。在海水中。
The direct current longitudinal resistance of the squid giant axon was measured as a function of the electrode separation. Large sea water electrodes were used and the inter-electrode length was immersed in oil. The slope of the resistance vs. separation curve is large for a small electrode separation, but becomes smaller and finally constant as the separation is increased. An analysis of the resistance vs. length curves gives the following results. The nerve membrane has a resistance of about 1000 ohm cm.2 The protoplasm has a specific resistance of about 1.4 times that of sea water. The resistance of the connective tissue sheath outside the fiber corresponds to a layer of sea water about 20µ in thickness. The characteristic length for the axon is about 2.3 mm. in oil and 6.0 mm. in sea water.