Electrophysiological Properties of Frequency Domain in Rats' Skeletal Muscle
- VernacularTitle:大鼠骨骼肌细胞的频域电生理特性研究
- Author:
Qing MA
;
Yongpeng ZHANG
;
Xueying HE
- Publication Type:Journal Article
- Keywords:
gastrocnemius,permittivity,conductivity,cell dielectric spectroscopy,central characteristic frequency,Cole-Cole plot,loss factor
- From:Chinese Journal of Sports Medicine
1983;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the electrophysiological properties of rat skeletal muscle within the frequency from 100Hz to 100MHz.Methods The AC impedance of rat sural muscle tissues was measured using the Agilent 4294A impedance analyzer, then the electrophysiological properties of the normal rat sural muscle cells were established in the respect of cell dielectric spectroscopy, Cole-Cole plots, spectrum of loss factor and loss tangent.Results (1) The dielectric response of rat sural muscle cells was frequency-dependent, such as increase in frequency caused decrease in permittivity. At the same time the conductivity trended to arise; (2) The dielectric parameters(?_L,?_h,?_L,?_h,△?″_ max,△tg?_ max,f_ C1,f_ C2) cell fiber parallel to the applied electric field differed from that cell fiber perpendicular to the applied electric field; (3) The effect of alternating current electric field on rat sural muscle cells showed a dielectric dispersion phenomenon, representing two characteristic frequency: the 1 st frequency(f_ C1(∥)=f_ C1(⊥)=1.02 kHz) and 2 nd frequency(f_ C2(∥)=59.31 kHz,f_ C2(⊥)=380.04kHz). Conclusion The method for studying the electrophysiological properties of rat skeletal muscle cells was established in the respect of the frequency domain,providing a possibility for investigating muscle fatigue in the future.
