Abstract
In order to study the usefullness of BSR for objective audiometry, patients with hearing impairments of various types of audiograms were tested by clicks, and subjective hearing threshold and response threshold of BSR was obtained.
The results were as follows.
1) It is difficult to presume the hearing level or type of audiogram of moderate hearing impairments by the subjective hearing threshold to clicks.
2) The subjective threshold to clicks coincided with objective threshold of BSR by clicks except high tone hearing loss, because the response of BSR showed the acuity of hearing over 2kHz, but subjective threshold to clicks related to all frequencies.
3) The normal response of BSR only meaned the normal acuity of hearing in one part of frequencies above 2kHz. It is thus difficult to presume the hearing level or audiogram of hearing impairments by only BSR, and it is necessary to determine the audiological assessement by ERA and others.
