FREE ESSAY ON COCHLEAR IMPLANTS

COCHLEAR IMPLANTS

Cochlear Implants
Researchers at the Indiana University School of Medicine in Indianapolis, have found that
the earlier a deaf child receives a cochlear implant, the better the child's speech
development. A cochlear implant is an electronic device that is implanted in the inner
ear of a profoundly deaf person. It stimulates the auditory nerve and allows the
individual to be aware of sounds. Researchers explain that being aware of sounds appears
to help language development, although the device does not allow hearing-impaired people
to hear speech clearly. This can help narrow the gap in language skills hearing-impaired
children experience compared with their hearing counterparts, researchers suggest.
Although hearing-impaired kids typically show stunted or slower acquisition of language
skills, cochlear implants can improve their developmental abilities. Researcher Dr. Mario
A. Svirsky says that he has found that when a child receives a cochlear implant, the
child begins to develop language skills at about the same rate as a child with normal
hearing. As hearing-impaired children grow older in age, they fall further and further
behind in their level of language ability. Cochlear implants can halt that progressive
disparity.
Despite the fact that previous studies have indicated that cochlear implants aid the
development of speech perception and production in children who were deaf since birth or
prior to language acquisition, cochlear implants have met opposition and criticism in
some circles.
Investigators write  If it could be shown that cochlear implants enhance language
development, in addition to just speech perception, this would be compelling evidence for
the effectiveness of cochlear implants in the pediatric population.
Dr. Svirsky and colleagues conclude that cochlear implants have a significant beneficial
effect on the development of English language in profoundly deaf children, and that the
best performers among children with implants, not only achieved very high levels of
speech perception, but also seemed to be developing an oral linguistic system based
largely on auditory input from a cochlear implant.
Bibliography
1. Psychological Science 2000; 11: 1-6.
2. Reuters Health Information, newsstand @ thrive, march 2000.