Relationship between oto-acoustic emissions and stimuli.

Abstract

The evoked oto-acoustic emissions were recorded from 13 normally hearing subjects. Click tone and 500, 750, 1000, 1500, 2000, 3000Hz tone bursts were used as stimuli for oto-acoustic emissions. A probe was made by a polyethylene tube with subminor-earphone and subminute transducer.The input-output relationships between the emissions and the stimuli were studied. The frequencies of emissions were constant, while the frequencies of stimuli were changed in each person. The oto-acoustic emissions evoked by tone-bursts had the lowest threshold at burst frequencies close to the emission's frequencies of each person.Clinically, if seemed useful to obtaine the emission induced by click at first, before the suitable frequencies for each person were found.