Cochlear Implants
There are over 200,000 cochlear implants in use worldwide, generally found in the West due to the costs associated with the materials and technology, the implant surgery and the post-implantation therapy needed. A Cochlear implant is a small surgically implanted device which helps improve the hearing abilities of profound or entirely deaf people. Cochlear Implants directly stimulate the Cochlea and the auditory nerve whereas hearing aids only amplify sounds so that they can be detected by damaged ears. In recent years, bilateral implants are becoming more commonplace (one implant in each ear). High pitch sounds create vibrations that do not pass very far over the membrane, whereas low pitch sounds create vibrations that stretch further. The microphone is held in place over the implant via a magnet in the implant. A Cochlear Implant differs from the previous technologies available, such as conventional hearing aids. The School caters for ages 3 – 19 and has three main educational departments, one of which is the Primary Department which caters for the needs of deaf children aged from 3 to 11 years of age. There are also far advanced models that can be fully implanted, but not without problems (battery replacement, microphone location), however they are not suitable for wide scale use yet. How do Cochlear Implants Work. Definition of a Cochlear Implant. This also means that the device can be removed for sleeping, battery replacement and upgrades. The actual implant is placed beneath the skin behind the ear, and the transmitter and the electrode array is placed in position so that external movement will not misplace them. Externally, the microphone covers this location, connected to the voice processor, which usually fixes behind the ear like any other hearing aid. The device comprises of a. • And an electrode array which is a group of electrodes that collects the impulses from the stimulator and sends them to the cochlea to be carried to the brain via the scala tympani. With regards to education, there are currently many Schools in the UK that cater for hearing impaired pupils, one of which is St Johns’ Catholic School based in Leeds. The larger the voice processor, the greater the ability of a system to pick out and amplify the relevant speech sounds. The device does not restore or replicate normal hearing, but it gives the user a sense of sound which is enough to help them understand speech. Sounds in the air lead to resonant vibrations on the basilar membrane in the Cochlea. The brain is able to interpret which area of the membrane is vibrating, so can therefore represent the correct sound that is being made. Because electronic technology is improving at a rapid pace, it is expected that these larger voice processors will soon become outdated. These vibrations cause disturbance to microscopic hair around the membrane, which can be picked up by surrounding nerves....



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Smart ass in elevator just called a cochlear implant (coke-lee-err) a cock-lee-err. Shut up & go back to night school.