Electrocochleography (ECoG) is a non-invasive electrophysiologic test of the electrical responses of the cochlea and is typically used to aid in the diagnosis of endolympathic hydrops. This test will be ordered by your Ear, Nose and Throat (ENT) physician.
In preparation for the test, the audiologist will clean the patient’s forehead and ear canals with a mild exfoliating scrub. Small metal disks will be taped on the patient’s forehead and earphones will be placed in the patient’s ear canals. Loud clicking or tapping sounds will be presented to each ear individually and data will be recorded. The patient will be asked to lie in a reclining chair in a relaxed state. It is acceptable for the patient to fall asleep during this evaluation. Test time is approximately one hour.
