TOPOGRAPHY OF LOW SKIN RESISTANCE POINTS (LSRP) IN RATS

Based on the electrical properties of the skin, a method employing the unijunction transistor (UJT) relaxation oscillator for detecting low skin resistance points (LSRP) was developed in this study. By means of this instrumentation, the topography of the LSRP in Wistar rats was d eveloped. All the LSRP in the rats were found to be bilaterally and sy mmetrically distributed except those points located on the dorsal midl ine (i.e., governor vessel, GV) and the ventral midline (i.e., concept ion vessel, CV). The resistances of the LSRP on these two major vessel s, including 14 CV points and 17 GV points of six rats were experiment ally determined to be in the ranges of 179.4 +/- 41.2 K Omega and 152. 5 +/- 32.2 K Omega, respectively. The resistances of the GV points wer e found in general to be lower than those of the CV points. Most non-L SRP, on the other hand, exhibited resistances of greater than 420 K Om ega. It is noted that the resistances of most LSRP increased yet still retained a separate identity within thirty minutes after the death of the animals, but the low resistance properties of some LSRP gradually disappeared thereafter and could not be detected by the relaxation os cillator.