Figure 1: Fit for the temporal loudness integration (TLI) curve for S3 at threshold (25 kpps, apical electrode; R2=0.99). Detection threshold (DT) plotted as amplitudes in CU (current unit, 1 CU is roughly equivalent to 1 µA). Stimulus duration in number of pulses (upper axis) and corresponding duration in milliseconds (lower axis). The lower axis was cut to accommodate the single pulse condition, for which a pulse train duration (in ms) cannot be assigned unambiguously. The vertical dotted line denotes the critical duration Ncrit above which the amplitude remains unchanged (I∞).