Temporal pattern of prothoracic auditory interneurone response during
downward (left) and upward (right) stepwise change of stumulus amplitude.
The preparation was stimulated with a pulse train (pulse duration 5 ms,
stimulation period 40 ms, carrier frequency 100 kHz). Stimulus amplitude
(peak value) is given in dB SPL (vertical axis). Each dot represents a
single spike. Time from the stimulus (pulse) onset is given
in ms (horizontal axis). Each amplitude step equal to 1 dB included
40 stimulus presentations.