EFFECTS OF TEMPERATURE ON MEMBRANE POTENTIALS OF LOBSTER GIANT AXON
EFFECTS OF TEMPERATURE ON MEMBRANE POTENTIALS OF LOBSTER GIANT AXON
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DOI：
10.1152/ajplegacy.1962.202.3.491
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发表时间：
1962-01-01
影响因子：
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通讯作者：
HENDRIX, DE
中科院分区：
文献类型：
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作者：
DALTON, JC;HENDRIX, DE
在2-20 ℃的范围内，龙虾轴突的静息电位随温度的升高而增加，这比能斯特关系所能解释的要大。动作电位也显示出随温度的初始增加，在约16 ℃达到峰值，然后降低。动作电位的最大上升和下降速率随温度升高而增加;传播动作电位的持续时间缩短。该制剂中的后电位是延迟复极的形式;随着温度的升高，后电位的大小增加，复极的速率也增加。这些结果进行了比较，结果已经为鱿鱼轴突。两种制剂之间的差异发生在静息电位、动作电位幅度和后电位与温度的关系上。有人建议，这些差异可以解释由温度依赖的分数的静息电位在龙虾轴突中不存在，或不活跃，在鱿鱼轴突的存在。
In the range 2-20 C, the resting potential of the lobster axon shows a greater increase with increase of temperature than can be explained by the Nernst relationship. Action potential also shows an initial increase with temperature, peaks at about 16 C, then decreases. Maximum rates of rise and fall of the action potential increase with temperature increase; duration of the propagated action potential decreases. Afterpotentials in this preparation are in the form of a delayed repolarization; as temperature is increased, the magnitude of the afterpotentials increases, as does the rate of repolarization. These results have been compared with results already available for the squid axon. Differences between the two preparations occur in the relationship of the resting potential, action potential magnitude, and afterpotentials to temperature. It is suggested that these differences may be explained by the presence of a temperature-dependent fraction of the resting potential in the lobster axon which is not present, or is inactive, in the squid axon.