Cochlear and brain-stem auditory evoked potential recording in patients with unilateral sensorineural hearing loss

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Abstract
Combining [human] ECochG [electrocochleogram] and BAEP [brain-stem auditory evoked potential] recordings gives complementary information in cases of severe unilateral sensorineural hearing loss. Abnormal shape of ECochG action potentials, clear recording of latency at cochlear level and measurement of retrocochlear conduction time as interpeak latency (V-I or V-N1) can all be of clinical diagnostic value for interpeaks with sensorineural hearing loss. The BAEP should be used as a screening test for patients with unilateral sensorineural hearing loss and combined with ECochG to reduce false positive results regarding VIII nerve tumor.