The basal electrical skin resistance of acupuncture points in normal subjects

Department of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea.
Yonsei Medical Journal (Impact Factor: 1.26). 01/1995; 35(4):464-74. DOI: 10.3349/ymj.1994.35.4.464
Source: PubMed

ABSTRACT The inhibitory component of the skin against given electrical current, also called as the electrical skin resistance, is subject to change in response to many factors, especially pain. In order to find out more definite relationship between pain and skin resistance, one should make measurement in the state devoid of any external disturbing stimuli to get the "basal skin resistance (BSR)", which is known to be different from point to point on body surface. Also, the "active points" have more consistent BSR characters than other points and most of them share same locations with "acupuncture points" which is easy to localize accurately and repeatedly in normal subject. Therefore, the comparison of BSR of certain acupuncture points of normal subject and pain-suffering subjects is expected to be able to figure out any pain-induced BSR changes. Our measurement at 16 acupuncture points (asymmetrical 8 pairs) of 10 normal subjects showed inconsistently asymmetrical distribution of the BSR values with significant order among themselves including left SP (spleen)-6 at their lowest position, but neither the measuring system itself nor any of the 16 points was statistically reliable enough for diagnostic purposes. So the measuring device needs to be improved with after evolution, and more acupuncture points need to be explored to complete our pain-related BSR map. In addition, the meaning of the above BSR distribution pattern is waiting to be explained through such efforts.

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    ABSTRACT: Several methods for assessment of severity of pain have been proposed but all of them are subjective. This study evaluated the association concerning changes in electrical resistance (ER) between two acupuncture points and severity of postoperative pain in order to define an objective measurement of pain. In a cross-sectional study, 50 patients undergoing lower extremity orthopedic surgery with postoperative moderate to severe pain (VAS > 4,) were consecutively enrolled. In the recovery room, the patients' pain scores were assessed and in patients with VAS > 4, the electrical resistance between Li4 and Li11 acupuncture points as well as pain scores was measured prior and following analgesic administration. Following meperidine use, the mean VAS significantly decreased and the ER between the two acupoints was significantly increased. However, Pearson correlation analysis did not reveal any association between the trends of pain intensity and ER (P > 0.05). The ER change in patients operated under epidural anesthesia was significantly less than those who experienced general or spinal anesthesia. There is a coincidence of pain relief and change in the ER of acupuncture meridians without significant association. The diagnostic value of ER for pain, stress response or any other physiologic outcome needs to be investigated in clinical trials with a well-defined control group, with more accurate instruments and probably in different acupuncture meridians.
    03/2013; 2(4):178-81. DOI:10.5812/aapm.7254
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    ABSTRACT: To provide the first objective data to show that the electrical conditions of an acupuncture point and a non acupuncture point are different.
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    ABSTRACT: The patient's low back pain can be determined using the visual analog scale (VAS) as subjective methods. This study aims to design a device used in evaluating low back pain objectively, by measuring skin resistance. To test the developed system, 8 low back pain (experimental group) and 8 healthy (control group) subjects were admitted in Dumlupinar University, Medical Faculty, Physical Therapy and Rehabilitation services. The skin resistance of all the subjects has been measured from their back using both the DC and the AC supplies. The skin resistance of the experimental group before the treatment and at the end of 15 days of the treatment was measured. The results of the treatment of the experimental group before and after treatment have been found to be statistically significant (p < 0.05). The measured skin resistance values were found to be statistically significant, when compared to the control and the experimental groups (p < 0.05). As a result of these findings, the developed system can be used to objectively determine low back pain by measuring skin resistance.