text stringlengths 0 205 |
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Gets on my nerves because you |
see hair cells in here that |
have stereocilia that |
are just waving around, |
but the stereocilia |
are really rigid. |
But anyway, I thought it |
would be interesting just |
to see what someone sees |
when they are getting |
this stuff from a |
cochlear implant. |
Let's see if this |
movie will play. |
[VIDEO PLAYBACK] |
In normal hearing, |
the hair in the inner ear-- |
PROFESSOR: I hate this. |
I mean the best |
membranes way over here. |
The hair cells-- |
-The hearing nerve still |
remains functional, |
but the hair cells have |
been lost or damaged. |
In a cochlear implant system, |
sound enters a microphone |
and travels to an |
external mini computer |
called a sound processor. |
The sound is processed |
and converted |
into digital information. |
This digital information is |
sent over a transmitter antenna |
to the surgically implanted |
part of the system. |
The implant will turn |
the sound information |
into electrical signals |
that travel down |
to an electrode array inserted |
into the tiny inner ear. |
The electrodes directly |
stimulate the auditory nerve, |
sending sound |
information to the brain. |
Bypassing the damaged inner |
ear, the cochlear implant |
provides an entirely new |
mechanism for hearing. |
[END VIDEO PLAYBACK] |
PROFESSOR: So that's |
what the patient's see. |
And how well does it work? |
So we can ask a demonstrator |
that we have today. |
Sheila come on up in |
front of the class. |
This is Sheila [? Zu ?], |
who is a MIT undergraduate. |
You're a senior now, right? |
What's your major at MIT? |
SHEILA: I'm the only |
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