POTENTIAL CHANGES DURING AND AFTER APPLICATION OF ANODIC CURRENT

概要

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By use of a frog nerve and ENM (electric nerve model) the potential changes were recorded in the following cases. 1. During and after application of anodic current of different intensity and of different duration, in which the excitation occurred or not. 2. During and after application of anodic current, which was too strong to elicit excitation after the break of the current. 3. During application of anodic current and after the partial break of the current, in which excitation occurred or not after the partial break of the current. 4. During application of anodic current which decreased exponentially, in which excitation occurred or not.<BR>The course of potential change on the nerve and ENM in each of the corresponding cases were almost the same, thus ENM was ascertained to be exactly the equivalent circuit of the nerve fiber. Therefore the mechanism of excitation by the break of anodic current of ENM in the following would be helpful in elucidation of that on the nerve.<BR>Discharging current of the condenser Cm in ENM, which was overcharged by anodic current, flowing from the gate to the cathode of the thyristor increased the potential difference between them. If the potential difference was elevated above the critical level (firing level), then the excitation occurred.
北関東医学会の論文