Electrical Resistivity of Rat Myocardial Tissue and its Change during Postmatal Growth

概要

論文の詳細を見る
In this study, the resistivity ρ and capacity C of the myocardium of rats (age : 22, 50, 65, 80, and 110 days) were investigated under the frequency range from 200 Hz to 100 kHz and at the fixed temperature of 10°± 1°C. The following results were found : 1) The characteristic curves of ρ measured at the respective frequencies converge towards a definite value (ρ≅120Ω·cm) which is obtained about twenty days before the time of birth. And this definite value is nearly equal to the ρ-value of the blood plasma of the rat. 2) The characteristic curves of C for rats of above instances measured by the same method coincide with the C-value of the blood plasma of the rat which is obtained at the point of the ρ-value≅120Ω·cm. 3) The ρ and C may be approximated by the following equations, R (∝ρ) =RE+RL0/1+ (ωCmRL0) 2, C=CmRL02/R2 {1+ (ωCmRL0) 2}+1/ω2CERL02The definite value of ρ is obtained when Cm, tends to become zero. 4) In the frequency range from 200 Hz to 300 Hz, ρ seems to depend upon the size of myocardial cells in the process of growth.
一般社団法人日本生体医工学会の論文