Threshold (C25%), upper response current level (C75%), and dynamic range vs. vMGB-AI CF difference. A: threshold vs. CF difference (r = −0.11, P = 0.202, t-test). B: C75% vs. CF difference (r = −0.05, P < 0.561, t-test). C: dynamic range vs. CF difference (r = 0.09, P = 0.305, t-test). To differentiate points, abscissa points were jittered.