ミミズ腹髓神經のV-CR關係について
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概要
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The ventral cord of Pheretima communissima was stimulated by a condenser discharge current. Utilizing the minimal contraction of circular muscle as an indicator, the threshold voltage was measured. The relation between threshold voltage and time constant of discharge current was hyperbolic, and it was shown that Hoorweg's experimental formula, V=a+b/CR, was valid for the present experimental results. The mean value of "a" was 0.0356±0.0047, and of "b" was 3.4110±0.9659. The mean value of the chronaxie was 108.804±25.720. The Theoretical formula of A. V. Hill concerning the electrical stimulation was tested by the above described data. Some of the examples were valid for this formula, but some were not. At present, the reason of this is not clear.
- 1953-11-15