Abstract
“Damping foctor ” of Monnier was calculated basing on the electrical stimulation theory of Hill, and the following formula was obtained.
B=1/2√3 (√4k+3λ/k-√k/4k+3λ)
(B: damping factor, κ : constant of local potential, λ : accomdation constant in Hill's theory)
κ and λ were measured experimentally on the sciatic nerve of Bufo vulgaris, and utilizing these values, the damping factors were calculated according to the above formula.
The value obtained was 1.09 ± 0.04, which coincided roughly with the value obtained by Monnier who mersured this value according to his definition of the damping factor.
The effect of various ions upon the damping factor were tested in the sciatic nerve.
Increase of C _??_ or decrease of K _??_ in the environmental fluid caused elevatation of the value of the damping factor, however, decrease of C _??_ or increase of K _??_ caused decrease of it.
When the concentration ratio of C _??_ and K _??_ in Ringer's solution was kept constant and the concentration of both irons was decreased or increased simultaneously, damping factor was slightly changed.
Citrate ions caused decrease of the damping factor.
