Saturday 1 March 2008

How a Cochlear Implant Work....

I am sure many of you really wonder what the cochlear implant looks like inside your ear and how it works?

Here's a pretty straightforward image of it:


1. Sound processor: External sound processor (hidden behind the ear) captures sound and converts it into digital signals. Sound waves enter the system through the microphone, located in the headpiece or the processor.

2. Digital signals: Processor sends digital signals to internal implant. The sound processor converts the sound into a distinctive digital code that has been programmed or "mapped" to maximize sound and speech understanding. Once processed, the electrically coded signal is sent to the headpiece and transmitted through the skin via radio frequency waves to the implant.

3. Electrode array: Internal implant converts signals into electrical energy, delivering it to the array of electrodes positioned within the cochlea.

4. Hearing nerve: Electrodes stimulate hearing nerve, bypassing damaged hair cells, and the brain perceives signals as sound.

Here is a video explaining how the CI works:

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