Cochlear implant
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A cochlear implant is an electronic device used by some people who have a hearing loss. It artificially stimulates the auditory nerve to create the sensation of sound. This can be sufficient for the implantee to "hear" well enough for them to learn to listen and speak in the hearing world. Typically, only those with a severe or profound hearing loss will use cochlear implants as those with less severe losses are able to obtain a sufficient level of hearing using traditional hearing aids.