DP-OAE and Pure Tone Audiogram of Human

Abstract

Distortion product otoacoustic emissions (DP-OAE) were measured in normal and sensorineural hearing impaired patients with near 4kHz primary tones (f1=3.9875kHz, f2/f1=1.225). The power of the 4kHz DP-OAE was well correlated with 4kHz pure tone audiogram. This result indicated a clinical applicability of DP-OAE for assessing the cochlear function in high frequency area which is hard to examine with conventional e-OAE.
The standard deviation of 4kHz DP-OAE powers of tinnitus sufferers were large, but there was no significant difference of powers between tinnitus sufferers and tinnitus free subjects. This result suggested the variabilities of origins of tinnitus.