implants are the most successful medical intervention
for those severely-to-profoundly deafened. The cochlear
implant does not amplify sound like a conventional
hearing aid. Instead, it bypasses the damaged parts of
the inner ear and delivers electrical impulses to the
auditory nerve which, in turn, sends information to the
technology uses a microphone and speech processor worn
outside of the ear to collect sound and speech
information. The device looks much like a conventional
hearing aid. The processor collects sound
information and sends it to the surgically implanted
device, which then sends the signal to the brain via the
illustration at right shows how a ci works.
(Illustration and text below courtesy of Advanced
captured by a microphone on the sound processor.
sound processor converts the captured sound into
detailed digital information.
magnetic headpiece transmits digital signals to the
implant turns the received digital information into
electrical information that travels down the
electrode array to the auditory nerve.
auditory nerve sends impulses to the brain, where
they are interpreted as sound.