British Medical Bulletin 43:926-937 (1987)
© 1987 The British Council
research-article |
Electrophysiological measures of hearing function in hearing disorders
MRC Institute of Hearing Research, Royal South Hants Hospital Southampton
Abstract
Auditory evoked responses have become an important tool in audiological and neurological diagnosis. Technical developments and improved procedures have led to increased reliability and have facilitated more routine application by health professionals who are not specialists in evoked responses. Measures of response quality and techniques which minimize noise contamination of the response have improved the basic methods of recording, and automatic response detection systems have led to a wider range of applications. There are now various methods of obtaining frequency-specific results from the early responses. Auditory thresholds are being estimated increasingly by the early responses, in preference to the larger but more variable late responses. The detection of peripheral and CNS disorders has been much enhanced by advances of technique but has been most improved by trials on large numbers of patients which have enabled the diagnostic criteria to be fully evaluated and assessed.