Cochlear implants are electronic devices, which are surgically implanted in the cochlea. They are best for those with severe to profound hearing loss due to hair cell damage. Although sounds reaching the brain via cochlear implants differ from natural sound quality, majority of people can still hear various environmental sounds and understand speech by cochlear implants. These days, varied types of new cochlear implants based on novel technologies, assist a great deal in understanding speech, listen to and understand music amid background noises.
Till December 2012, approximately 324,000 people globally have received cochlear implants.
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