Journal of Alternative and Complementary Medicine (New York, N.Y.)
OBJECTIVES: To determine whether electrodermal measures at Jing-Well acupuncture points, "indicator" points located at the tips of fingers and toes are associated with clinical measures in adolescent women with chronic pelvic pain. DESIGN: The design of this study was a randomized sham-controlled trial. Analyses of electrodermal measures were based on longitudinal, multivariable analyses using generalized estimating equations. SUBJECTS AND SETTING: The subjects were 14 young women (ages 14-22) with laparoscopically diagnosed endometriosis and chronic pelvic pain.
Electrodermal screening (EDS) is based on three commonly held assumptions: acupuncture points (APs) have lower electrical resistance than non-APs; resistance at APs varies with health and disease; and effective acupuncture treatments are associated with normalization of resistance at APs. Although evidence confirming these assumptions is limited, EDS is frequently practiced worldwide. Researchers are also beginning to assess EDS' utility as an outcome measure in acupuncture trials. Fundamental in developing EDS as a research tool is the need for an accurate and reliable measurement.
The reason for using acupuncture points as exposure sites in some applications of millimeter wave therapy has been unclear. Acupuncture points have been suspected to exhibit particular direct current (DC), low-frequency electrical and optical properties compared to surrounding skin. To assess if such a biophysical correlation could exist at millimeter wave frequencies used in the therapy, we investigated the dielectric properties of an acupuncture point on the forearm skin within the 50-75 GHz range.
Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
OBJECTIVE: There are many commercially available instruments for measuring electrical conductance, but there is little information about their reliability. The aim of this study was to quantify measurement variability and assess reliability of the AcuGraph system-a commonly used electrodermal screening device. METHODS: Four experiments were conducted to measure variability in electrical conductance readings obtained by the AcuGraph system. The first involved measuring known resistors. The second measured non-human organic matter.
Zhong Xi Yi Jie He Xue Bao = Journal of Chinese Integrative Medicine
OBJECTIVE: To investigate the possibility of using Ryodoraku as a tool to indicate sympathetic neuronal activity. METHODS: Twenty-two female college students were assigned to an treadmill exercise program (three times a week for six weeks), and another 25 were assigned as controls. Skin conductance levels of the subjects were measured at 24 Ryodoraku points on the wrists and the ankles, along with heart rate variability (HRV) analysis, during and after the treadmill exercise period.
Autonomic nervous system (ANS) response to acupuncture has been investigated by multiple studies; however, the brain circuitry underlying this response is not well understood. We applied event-related fMRI (er-fMRI) in conjunction with ANS recording (heart rate, HR; skin conductance response, SCR). Brief manual acupuncture stimuli were delivered at acupoints ST36 and SP9, while sham stimuli were delivered at control location, SH1. Acupuncture produced activation in S2, insula, and mid-cingulate cortex, and deactivation in default mode network (DMN) areas.