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nerves, maybe by the fact
that these electrodes
penetrated into the brain.
And so that underwent
an FDA trial,
but that's no longer used.
But this surface ABI electrode
is used in cases of NF2
or in other cases where the
nerve function is compromised.
Those implants don't
work very well.
So if you look at
this graph here.
This is a graph of the
different types of implants,
especially I'll call your
attention to the cochlear
implant and the auditory
brain stem implant.
In the cochlear
implant, you've got
a lot of people who can-- if you
do in a word recognition test,
how often they get the
words correct, a lot of them
are placing at
100% of the words.
So the task here is you
stand behind the subject,
or the audiologist stand
behind the subject,
and they say repeat
after me, baby.
And the person says baby.
Sunshine, and the
person says sunshine.
And the person says, Red Socks.
And you say, Cardinals.
And they got one wrong.
But anyway, you
can do these tests
without-- it's important
to stand behind the person
to make sure they're
not lipreading.
But a lot of cochlear
implant users
can get 100% on these tests.
Now, the ABI, auditory
brain stem implants,
you've got many of the
subject, if not all of them,
saying the wrong word or not
giving you any response here.
So what good is the ABI?
The real success story
of these prostheses
is that the person
can understand speech.
If the person can't
understand speech,
this thing isn't doing
them too much good.