Optokinetic Nystagmus 12/26

We can test the same system

by using the optokinetic tape,

which has various shapes.

And what I want you to do
is I want you to look

at each new shape as it comes
and appears.

So, looking right here.

Keep watching it as we move it...
to the right,

and now we're going to move it
to your left.

Keep watching right here.

Very good,
and we're going to move it up,

again,
watching the new object as it appears,

and we're going to move it down,
again, watch the new object.