The University of Arizona
Department of Surgery


Cochlear Implants

Cochlear implants are indicated for patients with sensorineural hearing loss that receive little to no benefit from conventional air conduction hearing aids. Sensorineural hearing loss originates in the cochlea (inner ear) or auditory nerve. Most cases of sensorineural hearing loss result from damage to the hair cells in the inner ear. Cochlear implants bypass the damaged hair cells in the inner ear by stimulating the auditory nerve directly. Conversely, conventional hearing aids just amplify the sound and pass it through the entire auditory system, including the damaged parts.

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