Title :
Evaluating object and region of concentric electrode in bio-electrical impedance measurement
Author :
Yamamoto, Yoshitake ; Shirai, Kiyoko ; Goda, Noriko ; Nakamura, Takao ; Kusuhara, Toshimasa ; Okuda, Hiroyuki
Author_Institution :
Fac. of Health Sci., Okayama Univ., Japan
Abstract :
Concentric electrode is easy to use and used widely for measuring bio-electrical impedance. But, its evaluating region was not investigated in detail. Then, the characteristics of concentric electrode were studied from various points of view. In case of use without electrode paste, impedance is determined with the contacting condition between electrode and skin surface over all frequency range. In case of use with electrode past, impedance is composed of stratum corneum in the frequency range of 20 Hz-1 kHz and is mainly composed of subcutaneous tissue in the range of 200 kHz-1 MHz. In the high frequency range, evaluating region of concentric electrode is the area less than the radius or the gap of center electrode.
Keywords :
bioelectric phenomena; biological tissues; biomedical electrodes; biomedical measurement; electric impedance measurement; 20 Hz to 1 kHz; 200 kHz to 1 MHz; bioelectrical impedance measurement; bioimpedance; concentric electrode; skin surface; stratum corneum; subcutaneous tissue; Admittance measurement; Bioelectric phenomena; Biomedical electrodes; Building materials; Capacitance; Concrete; Frequency measurement; Impedance measurement; Skin; Tail;
Conference_Titel :
Biomedical Engineering, 2003. IEEE EMBS Asian-Pacific Conference on
Print_ISBN :
0-7803-7943-8
DOI :
10.1109/APBME.2003.1302694
