How does a cochlear implant work?

   
The external speech processor captures sound and converts it into digital signals.
cc The processor sends the digital signals to an internal implant.
cc The internal implant converts the signals into electrical energy, then sends the energy to an electrode array inside the cochlea.
cc Electrodes stimulate the hearing nerve, bypassing damaged hair cells, and the brain perceives the signals as sound.

diagram showing  how a cochlear implant works

 

By Tracey Twomey

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