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So that's not to say |
that the ABI isn't |
successful in certain ways. |
The ABI is sometimes thought of |
as a lipreading assist device. |
So it helps these |
subjects read lips better. |
For example, if |
you guys are deaf |
and you look at my letters, and |
I make two different sounds, |
pa and ba. |
That looks exactly the same if |
you're trying to read my lips. |
But it sounds different to you. |
You guys have good |
hearing, and it |
may sound a little bit |
different to the ABI user, |
and it may give that ABI user |
a little bit of a step up |
and help versus someone |
who's just using lipreading. |
Now, just for |
completeness, I'll talk |
about the auditory |
midbrain implant. |
The idea here is to put |
the implant higher up |
in the pathway. |
Why would you want to do that? |
Well, some people |
think that the ABI |
doesn't work because there's |
been this tumor here. |
And surgeon has been hacking on |
the tumor to try to get it out, |
yanking and pulling on it. |
If the tumor didn't damage |
the cochlear nucleus, |
well, the hacking and |
tugging on it did. |
And so maybe you |
should put the implant |
further up where |
you haven't been |
hacking and everything's normal. |
And so that's the idea behind |
the auditory midbrain implant, |
which goes into the |
inferior colliculus. |
And there have |
been five patients |
who've gone undergone |
the auditory midbrain |
implant-- actually six, |
five very well documented. |
And the outcomes have been |
no better than the ABI, |
but that's because four out |
of the five well-documented |
didn't hit the right spot. |
The inferior colliculus |
is pretty small, |
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