FIG. 5.

The relation between stimulus intensity and corresponding compound action potential (CAP) amplitude before and after 80% sustained compression. (A) Examples of individual CAP responses to a range of stimulus intensities before and after compression. (B) Stimulus intensities ranged from 1.85 to 6.5 V. Thirty minutes of continuous compression significantly decreased CAP amplitude at all stimulus intensities (*p < 0.05; n = 7). (C) Normalized CAP amplitudes before and after compression are plotted on the same graph. CAP amplitudes were normalized with respect to the peak CAP and maximum stimulus (6.5 V). The linear relationship implies that sustained compression had no difference in changing conduction properties of large- or small-caliber axons.