نسيت كلمة المرور ؟
Plant this content does not belong to, or is hosted in zomoboâ€™s server. It is used under wikipediaâ€™s gnu free documentation license, and is freely available to people who wish to use it. This content has been sources from: jump to: navigation, search an auditory brain stem implant (abi) is a surgically implanted electronic device that provides a sense of sound to a person who is profoundly deaf, due to sensorineural hearing impairment (due to illness or injury damaging the cochlea or auditory nerve, and so precluding the use of a cochlear implant). The auditory brain stem implant uses similar technology as the cochlear implant, but instead of electrical stimulation being used to stimulate the cochlea, it is instead used to stimulate the brain stem of the recipient. Only about a thousand recipients have been implanted with an auditory brain stem implant, due to the nature of the surgery required to implant the device (as it requires brain surgery to implant the device) and the reduced effectiveness of the implant (most auditory brain stem implant recipients only have an awareness of sound - recipients won't be able to hear musical melodies, only the beat).  in the united states abis are only approved for adults (18 & over) and only for patients with neurofibromatosis type ii (nf2). In europe, abis have been used in children and adults, and in patients with nf2 as well as other auditory complications, such as auditory nerve aplasia and cochlea ossification.  speech perception in non-nf2 patients on average has been reported to be higher than that of nf2 patients.  contents 1 implant history 2 see also 3 references 4 further reading 5 external links  implant history the auditory brainstem was first implanted in humans in 1979 at the house ear institute, ca, usa.   this original abi consisted of two ball electrodes which were implanted near the surface of the cochlear nucleus. A change from a percutaneous connection to a wireless transcutaneous connection, and from ball electrodes to flat electrodes were the only c.
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