FIG. 10.

The effect of IPG increase in case of alternating stimulation. For cathodic-first stimulus polarity (A, B), a latency shift is not expected since the excitatory phase (shaded area) remains unchanged. For anodic-first pulses (C, D), the latency shift relative to the stimulus onset is proportional to the IPG duration. In case of equal contribution of both pulse polarities, a latency shift of 14 μs is expected. The black bar indicates the time between stimulus onset and termination of the excitatory phase.