Figure 6.

Auditory-nerve fiber (ANF) responses to the 8 kHz (A, C, E, and G) or 32 kHz (B, D, F, and H) tone pips used to evoke auditory brainstem response (ABR) responses, viewed as a function of spontaneous discharge rate. These data are from the same as those plotted in Fig. 5, C–J as function of characteristic frequency. As in Fig. 5, gray symbols denote fibers not responding to the tone pips, according to a paired t test of “tone-on” vs. “tone-off” spike counts. The green oval in C encircles the same cloud of off-CF responses encircled in Fig. 5E. Symbols aligned at the max or min of the ordinate have off-scale values. FSL, first spike latency; SR, spontaneous rate.