The Journal of the Society of Korean Medicine Diagnostics (대한한의진단학회지)

The Society of Korean Mecicine Diagnostics (대한한의진단학회)
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The Problems in the Measurement of DC Potential on Meridian Skin Area

경락노선상 직류 전위 측정에서의 문제점

  • Heo, Ik-Beom (TASFO) ;
  • Lee, Woo-Cheol (Department of Biomedical Engineering, Seoul Health College) ;
  • Lee, Yoo-Jeong (Department of Mediacal R&D, Korea Institute of Oriental Medicine) ;
  • Yin, Chang-Shik (Department of Acupuncture, CHA Biomedical Center, College of Medicine, Pochon CHA University)
  • 허익범 ((주)타스포) ;
  • 이우철 (서울보건대학 의료공학과) ;
  • 이유정 (한국한의학연구원 의료연구부) ;
  • 인창식 (포천중문의과대학교 차바이오메디컬센터 침구과)
  • Published : 2005.07.31
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Abstract

Background and purpose: The measurement of direct current (DC) potential on skin area of meridian has recently been adopted to explore the electrophysiological characteristics of meridian system, But there exists two problems to be explained; the entity of the DC potential to be measured and the characteristics of electrode gel interface of measurement system, It is not clear whether the DC potential reflect, at least hypothetically, the entity of meridian, and if there exist any unstable factor in the DC potential measurement system. Methods: In this study, we designed an electronic circuit model of skin and applied known DC potential sources $({\pm}10.75mV,\;0mV)$ to the electrode interface of the skin model. Results: The result showed that the measured DC potential changed according to the time, and the same phenomenon was observed when the electrode gel was replaced with an electric condenser. It is suggested that the measurement of DC potential on electrode gel interface is very difficult and produces unstable values due to the capacity effect of electrode gel. Conclusion: Further studies on the DC potential evaluation in the context of meridian study should consider and bypass this problem.

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