Sensitivity based on spike counts. (A) Sensitivity (AUC) based on spike count distributions obtained from windows with increasing duration (3 example units, levels of gray).(B) Histograms of sensitivities observed in the total sample. Spike counts obtained with varying window durations are plotted in different shades of gray. Progressively darker curves represent neurometric performance and windows of 30 to 125–5000 ms (excluding the on-response by omitting the first 30 ms) and the on-response itself (window 0–50 ms; broken line). Psychophysical sensitivity is replotted for comparison (arrows pointing to the mean AUC values, same data as shown in Fig. 1C).