Abstract
A study has been made of the relationship between the mechanical and the electrical response of the nerve muscle preparations of the frog sartorius induced by a single direct and indirect stimulation. The electrical response was recorded from the surface of the muscle, and its area and amplitude were measured. The stimulation parameters were: pulse....square wave; pulse duration....1 msec in direct and 0.01 msec in indirect stimulation; intensity.... from threshold to supramaximal. The combinations of stimulation and lead were as follows: 1) unipolar lead and direct stimulation, 2) unipolar lead and indirect stimulation, 3) bipolar lead and indirect stimulation.
The data gained under these three conditions of experiment were analyzed statistically. The correlation coefficients of tension and the action potential area were from 0.896 to 0.995 (p<0.001), and those of tension and amplitude were from 0.831 to 0.996 (p<0.001) . Any significant difference was not found between these two groups of correlation coefficients.
The experimental results were disccused in detail.
