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Evidence-Based Complementary and Alternative Medicine
Volume 2012 (2012), Article ID 179657, 6 pages
Research Article

Research on Nonlinear Feature of Electrical Resistance of Acupuncture Points

1Laboratory of Acupuncture and Moxibustion, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
2Systemic Physiology Laboratory for Acupuncture and Meridian, Shanghai Research Center of Acupuncture and Meridians, 199 Guoshoujing Road, Shanghai 201203, China

Received 19 September 2012; Accepted 16 November 2012

Academic Editor: Wolfgang Schwarz

Copyright © 2012 Jianzi Wei et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A highly sensitive volt-ampere characteristics detecting system was applied to measure the volt-ampere curves of nine acupuncture points, LU9, HT7, LI4, PC6, ST36, SP6, KI3, LR3, and SP3, and corresponding nonacupuncture points bilaterally from 42 healthy volunteers. Electric currents intensity was increased from 0 μA to 20 μA and then returned to 0 μA again. The results showed that the volt-ampere curves of acupuncture points had nonlinear property and magnetic hysteresis-like feature. On all acupuncture point spots, the volt-ampere areas of the increasing phase were significantly larger than that of the decreasing phase ( ). The volt-ampere areas of ten acupuncture point spots were significantly smaller than those of the corresponding nonacupuncture point spots when intensity was increase ( ). And when intensity was decrease, eleven acupuncture point spots showed the same property as above ( ), while two acupuncture point spots showed opposite phenomenon in which the areas of two acupuncture point spots were larger than those of the corresponding nonacupuncture point spots ( ). These results show that the phenomenon of low skin resistance does not exist to all acupuncture points.