A cochlear implant (CI) is a surgically implanted electronic device that provides a sense of sound to a person who is profoundly deaf or severely hard of hearing. The cochlear implant is often referred to as a
bionic ear. Unlike
hearing aids, the cochlear implant does not amplify sound, but works by directly stimulating any functioning
auditory nerves inside the
cochlea with electrical impulses. External components of the cochlear implant include a microphone, speech processor and transmitter.
See more at Wikipedia.org...