Paired tone suppression in a short-pass duration-tuned neuron. The number of spikes per BD tone stimulus began to decline while there was still a gap between the leading BD tone and the lagging NE tone. The last spikes of the response burst were the first to be deleted. Responses were maximally suppressed when the pedestal was in the first half of the composite stimulus but began to recover as the pedestal moved toward the end of the composite stimulus. Responses recovered completely when there was again a gap between the leading NE tone and the lagging BD tone. The two tones, illustrated asbars, were presented at the BEF of the cell. The2 msec bars with a white fill indicate two time intervals when the BD tone was contiguous with but did not overlap the NE tone. The 2 msec bars with a gray fill indicate four time intervals when the amplitude of the pedestal in the composite stimulus was below criterion for inclusion in the summary plots of Figure 8. BD tone duration, 2 msec; NE tone duration, 20 msec; BD and NE tone frequency, 44.0 kHz; BD tone threshold, 44 dB SPL; BD tone amplitude, 64 dB SPL; NE tone amplitude, 54 dB SPL; 15 trials per stimulus.