An 8-channel skin impedance measurement system for acupuncture research.
An 8-channel skin impedance measurement system for acupuncture research has been developed. The underlying model of the skin used is a parallel R & C network. Pulses are used to measure the R and C values. The measurement circuit is time multiplexed across the 8 channels at the rate of 2 measurements per second, leading to a complete set of measurements every 4 seconds. In static tests, the system has been operational for over 2 days of continuous measurements. In preliminary human tests, measurements over 2 hours have been collected per subject.
Thong
Tran
T
Department of Science & Engineering, Oregon Health & Science University, Beaverton, OR 97006, USA. trant@bme.ogi.edu
Colbert
Agatha P
AP
Larsen
Adrian P
AP
D026881:Acupuncture / Q000295:instrumentation*; D000669:Amplifiers, Electronic; D004553:Electric Conductivity; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006801:Humans; D010992:Plethysmography, Impedance / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012879:Skin Physiological Phenomena