Information from the cerebral cortex comes down into the
pons and then crosses the midline to come into the cerebellum.
And information from the cerebellum leaves to go to the
midbrain on the other side of the body, and to go to the
thalamus in order order to go back to the cerebral cortex.
So a lesion on the left side of the the cerebellum is
going to affect movement on the left side of the body.
So, ipsilateral, same side.
Now as you, as you know, the cerebellum
is actually attached through these Peduncles, and so you
could damage the cerebellum, or you could just
damage the peduncles, it would have the same effect.
Since everything has to come in and out of the peduncles, a damage
to the peduncles will have the same effect as damage to the whole cerebellum.
So let's imagine that we have a stroke, a
pretty devastating stroke, such as the one that Bubby suffered.
What we would see, but let's say it's less devastating than what Bubby suffered
and that what we're doing is we're, we're losing half of the pons.
What you would see here is an ataxia on the same side
of the body, but a paralysis on the opposite side of the body.
So let's just make sure that that's clear.
That what we just said is the cerebellum operates on the same side of the body.
So the ataxia, the dysfunction of the cerebellum is
going to be on the same side of the body.
But this information from the cerebral cortex that is