The biopotential of acupuncture points and its standard error

Abstract

We studied the biopotential of acupuncture points in six meridians and its standard error to verify how reliable it is to measure electric potential on skin for investigating electrical properties of acupuncture points. Twenty healthy subjects were participated in this study for each meridian. Five-phase acupuncture points were used for recording then smoothing and normalizing were performed to analyze data. There was a positive correlation between standard error of biopotentials and acupuncture depth. It means acupuncture points close to the skin provide more reliable results than ones with deeper acupuncture depth when investigating electrophysiological characteristics of meridians.