[Studies on the phenomenon of latent propagated sensation along channel (LPSC) by combining applied knocks, measurement of resistance and record electric current].

About twenty five percent of people have the typical phenomenon, i.e. a specific feeling propagating along the channel course during the application of needling or other stimuli on Jing acupoint. These characteristics are named marked PSC. About seventy five percent of people with no prominent propagated sensation. We concerned about how to change the obscure appearance into obvious. Combining applied knocks, measurement resistance and record electric current were used in our studies. RESULTS 1. After knocks, a specific propagational numb feeling at the point which is named as "positive point". 2. Most positive points of channel course on all of the 26 subjects under examination, the impedance value 40-65 (100 k omega) was lower than that at control points 80-90 (100 k omega), but the amplitude of electric current wave (14-38 cm) was higher than that at control points (6-11 cm). 3. By linking up these positive points of specific feeling an imaginary line which just the classical large intestine channel, this line is named as latent propagational sensation ling along channel (LPSC).