Evoked Potential tests measure the response of the nerve and auditory pathway to sound presented to the inner ear (cochlea). They include: Auditory Brainstem Response (ABR), Electrocochleography (ECoG), Middle Latency Response (MLR), and Late Latency Response (LLR).
They are measured by the use of sticky sensors placed on the head that pick up the electrical signal transmitted by the hearing nerve in response to a clicking sound or tone. Patients do not have to do anything during the test except relax and remain quiet.
These tests can be used to predict hearing thresholds or identify problems with the hearing nerve’s transmission of the sound to the hearing parts of the brain.
Who can refer?
Evoked Potential tests are done on referral from an audiologist or physician.