cochlear prosthesis

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co·chle·ar im·plant

an electronic device consisting of a microphone, speech processor, and electrodes that are implanted in the inner ear to stimulate the remaining nerve fibers of the auditory division of the eighth cranial nerve in adults and children with profound hearing impairment or deafness. Many recipients of cochlear implants achieve high, open-set word recognition and can understand speech even over the telephone.
See also: auditory prosthesis.
Synonym(s): cochlear prosthesis
Farlex Partner Medical Dictionary © Farlex 2012
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The essential components in a cochlear prosthesis system are illustrated in Figure 3 and include (1) a microphone for sensing sound in the environment, (2) a speech processor to transform the microphone input into a set of stimuli for the implanted array of electrodes, (3) a transcutaneous link for the transmission of power and stimulus information across the skin, (4) an implanted receiver/ stimulator to decode the information received from the radio frequency signal produced by an external transmitting coil and generate stimuli using the instructions obtained from the decoded information, (5) a cable to connect the outputs of the receiver/stimulator to the electrodes, and (6) the array of electrodes.