Cochlea

Cochlear implant: A small complex electronic device that is surgically placed (implanted) within the inner ear to help persons with certain types of deafness to hear.
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Cochlear implant
Information:
A cochlear implant is a small electronic device that helps people hear. It can be used for people who are deaf or very hard of hearing.
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A cochlear implant is an electronic device to provide a sensation of hearing to individuals who are deaf. It consists of two main parts: an external part worn somewhat like a hearing aid, and an internal part which must be implanted by a surgeon.
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Cochlear implants stimulate nerve ends within the inner ear, enabling deaf children to hear.
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The cochlea is an inner ear structure surrounded by fluid. It contains multiple small hairs. Pressure waves in the fluid cause the hairs to move. This movement stimulates the auditory nerve.
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Clarion cochlear implant Implant which bypasses ear damage sending electric signals directly to the auditory nerve. These signals are then interpreted by the brain as sounds. Mfg/Source: Advanced Bionics.
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A hearing aid or cochlear implant may be provided to improve hearing.
Review Date: 10/27/2003
Reviewed By: James L. Demetroulakos M.D. F.A.C.S., Department Of Otolaryngology, North Shore Medical Center, Salem, MA.
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Conductive problems are those that disrupt the conduction of sound through the outer and middle ear (see ear), affecting hearing before the sound reaches the cochlea and the nerve receptors of the inner ear.
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Otoacoustic emissions are sounds produced by the cochlea, a fluid-filled coiled structure in the inner ear that converts sound vibrations into electrical signals that go to the brain.
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The vestibular nerve transmits information concerning balance from the inner ear to the brain and the cochlear nerve transmits information about hearing. The vestibular nerve, like many nerves, is surrounded by a cover called a myelin sheath.
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In situations of severe to profound nerve deafness, cochlear implants — which help compensate for damaged or nonworking parts of the inner ear — also can improve hearing. Cochlear implants have improved in the last several years.
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inner ear [cochlear] implants, brain aneurysm clips, some artificial heart valves, pacemakers, older vascular stents) are not compatible with MRI.
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While the external parts of our ear act like trumpets to collect sound, an organ known as the cochlea deep within the inner ear in the skull is responsible for converting the mechanical vibration of sound into electrical signals, ...
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When hearing is impaired and does not improve with medical treatment, cochlear implants may be helpful.
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ANNOUNCER: It's those hair cells in the cochlea that help transmit sound to the brain. Once they are damaged, hearing loss can be permanent, though you may not notice a problem until years later.
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The three tiny bones of the ear (ossicles) may fail to conduct sound to the cochlea or the eardrum may fail to vibrate in response to sound.
Nerve loss occurs when the nerve is injured by physical or other means.
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