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Evidence-Based Complementary and Alternative Medicine
Volume 2013 (2013), Article ID 198451, 4 pages
Research Article

Different Surface Electromyography of Propagated Sensation along Meridians Produced by Acupuncturing Quchi Acupoint (LI11) or Control Points

1Liaoning University of Traditional Chinese Medicine, 79 Chongshan East Road, Huanggu District, Shenyang 110847, China
2Department of Traditional Chinese Medicine, General Hospital of Shenyang Military Region, Liaoning, China
3Department of Pharmaceutical Engineering, College of Medical Life Sciences, Silla University, Busan 617-736, Republic of Korea
4Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, Beijing 100700, China

Received 19 June 2013; Accepted 2 August 2013

Academic Editor: Cun-Zhi Liu

Copyright © 2013 Chun-Ri Li 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.


This study investigated the propagated sensation along meridians (PSM) produced respectively by acupuncture at a specific acupoint of right-side Quchi (LI11), a nonacupoint on meridian (control meridian point), and neither meridian nor acupoint (control point). All the stimulated points were on the right brachioradialis along the large intestine meridian of hand Yangming. Surface electromyography (sEMG) was used to reflect the activity of the brachioradialis along the large intestine meridian of hand Yangming. The PSM rate of LI11 (59.21%) and the control meridian point (53.95%) were significantly higher than the control point (38.16%) ( ). After acupuncture, the brachioradialis sEMG amplitude was  uV at LI11,  uV at the control point, and  uV at the control meridian point. The amplitude of LI11 was significantly higher than both the control meridian point and the control point ( ). When the sEMG activity of brachioradialis returned to the stable base line, brachioradialis sEMG duration at LI11 (  s) was significantly longer than that at the control meridian point (  s) and the control point (  s) ( ). In conclusion, acupuncture activated PSM at all points but showed an acupoint specificity at LI11 and a meridian specificity at the control meridian point.