With the advancement of technology, even profound sensory neural loss is not a problem. Cochlear implants are devices that are implanted into the cochlea; these devices convert the sound energy to electrical energy thereby stimulate the cochlear nerve.
The device consists of various parts:
1. Microphone: It is receptive to sound energy and is implicated in the collection of sound signals.
2. Speech processor: It converts sound energy to electrical energy.
3. Transmitter: It transfers the electrical signal into the inner coil.
4. Receiver: It receives the signal from the transmitter and further transfers it to the cochlea. It is implanted in the skin.
5. Electrodes: Electrodes present on the cochlea receive electrical signals and stimulates the auditory nerve.
The sound perceived as a result of cochlear implantation is different from normal hearing. This warrants rehabilitative measures such as auditory training.
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