Abstract
Objective audiometry was performed on 10 patients with mental retardation by means of Brainstem Evoked Responce (=BSR).
It is often important, for the evaluation or training of mentally retarded children, whether they are suffering from hearing loss or not
In mental retardation, it is very difficult to perform subjective audiometry, and so is necessary to utilize pure objective audiometry. But it is not always easy to estimate general subjective threshold of hearing loss only by BSR. And then, combined with the other ERA series (i.e., EcochG, FFR, MLR, SVR, etc.), impedance audiometry, and possible audiometries or hearing evaluation, one can estimate the state of hearing loss more accurately.
However, when the features of mental retardation are known, BSR appears to be one. of the most useful methods to estimate the hearing in mentally retarded children.
