Effects of contralateral inhibition on ISI distribution of AN2 responses. Histograms show the mean number of ISIs per second; bin width, 1 ms. A, B, Mean ± SE ISI distributions (n = 9) for the initial portion of the response (0-1 s after sound onset) and the adapted portion (1-14 s), respectively. Insets, Percentage of ISIs <5 ms. We indicate with a dotted line the 5 ms mark. Stimulus notation as for Figures 3 and 4.