Example poststimulus time histograms (PSTHs, 100 repeats, 1-ms bin width) of the excitatory responses in a conductive hearing loss (CHL, A) and a cochlear ablation (CA, B) animal. Contralateral sound was broadband noise (BBN, 100-ms duration, 1.5 ms rise-fall time) at 80 db SPL. Responses are from multiunit clusters. The stimulus start time was 25 ms.