I just want to contrast, in this segment, I
want to contrast the cerebellum and the basal ganglia.
These are the two great loops of the brain.
And in both situations, there's a ton
more information coming into them than comes out.
In the cerebellum we know that it's 40 to one.
In the basal ganglia it's probably a sim, on a similar
order of magnitude, so everything has to go through these two loops.
What are they doing that's the same?
What are they doing that's, that's, different?
Well, in this case of the cerebellum,
you have access to very rudimentary sensory information.
Information about where your body is.
What, where you're, how stretched your muscles are and
how your joints are, are, situated, that kind of thing.
In the case of the basal ganglia, the input is very, it,
the message of the input is very carefully controlled by the cortex.
The cortex is telling the basal ganglia what, is controlling.
It's essentially a censor for all that sensory input.
If it can't make it through the cortex,
the basal ganglia is never going to know about it.
That gets censored out.
So, so the cerebell or, cerebellum has access to very mundane information.
And there's no censor.
And as a result, the cerebellum is acting on every single movement, whether it's a
movement of great, whether it's a movement of
great profundity, or whether it's a trivial movement.
Whether it means something to, to you, or whether it's
something that is just, en route to getting something else.
As, and in contrast with the basal ganglia, things have a
meaning and, and normally, when the basal ganglia is firing on all
pistons, then the moods, your motivation, your emotion, your
perceptions, and your actions are all oriented towards one goal.
You're working fully, fully on it with your full brain
focused, fixated, on one outcome, and you use every piece of your brain function.
All that motivation, all that mood, all
that affect, all that emotion, and the perceptions.
You don't see the things that you're not interested, they're, that are irrelevant.