Values of BAEP wave V thereshold in identification of simulated deafness

Objective:To investigate the significance of wave V threshold of brainstem auditory evoked potentials(BAEP) in identifying simulated deafness.Methods:BAEP and audiogram were tested in 225 patients with ear injury and 60 normal subjects.Results:In the normal cases, 10 20dB below wave V threshold of BAEP corresponded to the objective hearing threshold. One hundred and sixty one patients showed subjective hearing threshold conforming to the estimated threshold, 53 of which had normal hearing, the other 108(48%) cases had decreased hearing level, and 64(28%) cases whose subjective hearing threshold didn't conform to the estimated threshold, were considered as simulated deafness.Conclusions:The simulated deafness could be accurately identified by combining BAEP with audiogram and objective hearing level could be evaluated.