Zhen Ci Yan Jiu. 1990 ; 15(3): 232-8.

[Studies on the low skin impedance points and the feature of its distribution along the channels by microcomputer. I. Observation on the reliability of the measurement]

Hu X, Wu B, Xu J, Hao J.

Fujian Institute of T.C.M. Fuzhou.

According to the requirement of channel research, a system for the measurement of skin impedance had been designed and a series of experiments to check the reliability of this system had also been done. The facts demonstrated that the pressure exerted by the exploring electrode, the duration of switch-on as well as the number of times of repeated measurements all showed no conspicuous influences on the skin impedance. The results are stable and reliable. Moreover, the measurement and data processing are controlled by microcomputer. Thus, the method of measurement of skin impedance along the channels has been developed to a higher level. Under the conditions of our experiment, the impedance of the low skin impedance points (LSIPs) are about 108k omega, which are quite low than that of the non-LSIPs around them. The difference between the two is highly significant. Both the impedance of LSIPs and non-LSIPs are stable, without marked variation. These results provide the prerequisites indispensable for the further observation on the feature of the distribution of LSIPs.