How cochlear implants workBy Mayo Clinic staff
Original Article: http://www.mayoclinic.com/health/medical/IM03853
How cochlear implants work
Cochlear implants use an external microphone and speech processor that you generally wear behind your ear. A transmitter sends radiofrequency signals to a surgically implanted electronic chip, the receiver-stimulator, which stimulates the auditory nerve with electrodes that have been threaded through the cochlea.