DP-OAE in Tinnitus Patients

Abstract

Distortion products otoacoustic emissions (DP-OAE) were measured in normal and sensorineural hearing impaired patients with and without tinnitus in 0.5, 1, 2, 4, 8kHz (f2/f1=1.21, L1=L2=75dB SPL). In subjects with pure tone thresholds better than 25dB in 4kHz, 4kHz DP-OAE amplitudes of tinnitus sufferers were significantly lower than tinnitus free subjects. These results suggested the possibility of objective assessment of tinnitus with DP-OAE.