Abstract
The most appropriate rise-decay time of tone pips for frequency-selective stimulation of auditory brain stem response (ABR) was studied using the pure tone masking technique in six adult cats.Auditory stimuli consisted of 500Hz, 1000Hz, and 2000Hz tone pips with five rise-decay times (0.5, 1, 2, 4, 8msec). ABRs were recorded using the tone pips as stimuli under masking by pure tones of various frequencies. Decrements in ABR amplitudes by pure tone masking with different frequencies were compared among five different tone pips at each frequency.The results indicated that the most appropriate rise-decay time of tone pips for frequency-selective ABR was 4msec at 500Hz, 1000Hz, and 2000Hz.
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