Inner ear implants
AuthorClark, Graeme M.
Source TitleEncyclopedia of biomaterials and biomedical engineering
University of Melbourne Author/sClark, Graeme
Document TypeBook Item
CitationsClark, G. M. (2004). Inner ear implants. In G. E. Wnek & G. L. Bowlin (Ed.), Encyclopedia of biomaterials and bioengineering. New York: Dekker.
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The cochlear implant is an electronic device that brings useful hearing to severely to profoundly deaf people through multiple-channel electrical stimulation of the auditory nerves in the inner ear. This is required if their inner ears are so badly damaged by injury and disease, or so inadequately developed, that they cannot provide sufficient hearing for communication, even when the sound is amplified with a hearing aid. By stimulating the nerve directly with patterns of electrical pulses, the implant bypasses the normal function of the sense organ of hearing in the inner ear to partially reproduce the coding of sound. It consists of a wearable speech processor that picks up sound with a microphone, analyzes the signal, and then sends it by radio waves to the implanted receiver stimulator, which decodes the message and stimulates the electrode wires inserted into the inner ear.
Keywordscochlear implants; otolaryngology; auditory nerve; treatment of deafness; electrical stimulation; hearing prosthesis; inner ear; psychophysics; speech processing
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- Graeme Clark Collection