Figure 4:

Schematic illustrating chinchilla behavioral threshold obtained in the presence of 50 dB SPL broadband noise (BBN) with a spectrum level of ~7 dB SPL/Hz. Prior to carboplatin treatment, behavioral thresholds measured in BBN increased from approximately 30 dB at low frequency to roughly 40 dB at 8–16 kHz. After carboplatin treatment that induced a moderate IHC lesion along the length of the cochlea, the behavioral thresholds in BBN increased roughly 8–10 dB. Data schematized from Lobarinas et al. (31).