Figure 6. (A) Same model as in Figure 5 except that the threshold of the inhibitory input has been elevated by a traumatising tone presented at a frequency located at the inhibitory CF, i.e., slightly above the excitatory CF. (B) Since the threshold of the inhibitory input has been elevated, the output of the excitatory response area expands primarily along the low-frequency tail of the tuning curve. (C) Discharge rate-level function pre- and post-exposure. The discharge rate at CF shows an increase in the maximum rate and an increase in the dynamic range because the traumatising exposure elevates the threshold of the inhibitory input (from Salvi et al., 1998 with permission).