Figure 4

Test of SENB using two different tintp values and then two different stimulus frequencies. (a) Applying a train of four stimuli with tintp = 5 ms and fe = 253.16 Hz, and (b) applying a train of 4 stimuli with tintp= 13 ms and fe = 100.5 Hz. Note that at fe = 253.16 Hz, only two action potentials are propagated, while for a lower stimulus frequency, fe = 100.5 Hz, four action potentials are propagated.