Fig. 4.
Effect of variation in interphase gap (IPG). Symmetric biphasic pulses with varying IPG were delivered to 10 implanted SCCs in 5 animals at two different pulse durations (PD), 180 μs and 340 μs. The current amplitude was halfway between threshold and maximum current levels. For the range of IPGs tested, no significant effect was observed on either the VOR response eye velocity (A,B) or axis misalignment (C,D). R2 < 0.05 for regression lines in all panels.