Modeling and experimental study on frequency-domain electricity properties of biological materials.
- Author:
Hua TIAN
1
;
Shiqiang LUO
;
Rui ZHANG
;
Gang YANG
;
Hua HUANG
Author Information
1. Biomedical Information Engineering Department, Sichuan University, Chengdu 610065, China.
- Publication Type:Journal Article
- MeSH:
Animals;
Electric Capacitance;
Electric Impedance;
Electricity;
Electrodes;
Muscle, Skeletal;
physiology;
Rana esculenta;
Skin;
Sodium Chloride
- From:
Journal of Biomedical Engineering
2009;26(6):1349-1352
- CountryChina
- Language:Chinese
-
Abstract:
Frequency-domain electricity properties of four objects, including bullfrog skin, bullfrog muscle, triply distilled water and 0.9% NaCl, were tested in the range of 100Hz-10MHz using home-made electrode and measuring system. The experimental results showed that the resistance of 0.9% NaCl decreased dramatically, that the amplitude frequency characteristics of bullfrog's muscle and skin were similar, but that of triply distilled water did not change significantly. The frequency dependence of 0.9% NaCl showed that the electrode had great influence on the measuring system, so a new equivalent circuit model based on the electrode system was needed. These findings suggest that the new five-parameter equivalent circuit model, which embodies considerations on the interaction between electrodes and tissues, is a reasonable equivalent circuit for studying the electrical characteristics of biological materials.
