AB-Intra- and Post-Operative Measures of Auditory Function

Electrocochleography is a noninvasive method of monitoring for acoustic evoked electrophysiologic responses from the cochlea. A speaker in the external auditory canal presents a tone burst stimulus and a nearby electrode, in this case from the apical electrode of the cochlear implant, records changes in the electrical activity within the cochlea. Different functional elements within the cochlea have signature electrophysiologic responses that can be isolated and studied individually. Through the use of intracochlear electrocochleography during cochlear implant electrode insertion valuable insight can be gained about structural or physiological changes that may be occurring.