Sheep Cerebellum

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Del curso dictado por The University of Chicago

Understanding the Brain: The Neurobiology of Everyday Life

668 calificaciones

The University of Chicago

Understanding the Brain: The Neurobiology of Everyday Life

668 calificaciones

Learn how the nervous system produces behavior, how we use our brain every day, and how neuroscience can explain the common problems afflicting people today. We will study functional human neuroanatomy and neuronal communication, and then use this information to understand how we perceive the outside world, move our bodies voluntarily, stay alive, and play well with others.

De la lección

Perception and Vision

Perception is how the brain interprets incoming stimuli. Not all stimuli that can be sensed are perceivable, and sometimes those that can be perceived play tricks on us. The systematic ways that stimuli are interpreted (or misinterpreted) show how well the brain can understand our surroundings, sometimes with limited information. This module we will explore perception and vision.This module contains a lot of material, so be sure to start early so that you have time to finish!

Sheep Brain vs Human Brain4:51

Sheep Cerebellum2:53

Sheep Brain Parts5:56

Sheep Brainstem5:14

Sheep Ventricles, pt.13:47

Sheep Ventricles, pt.211:57

Sheep Spinal Cord & Cauda Equina8:45

Conoce a los instructores

Peggy Mason
Professor
Neurobiology

[MUSIC].

Okay, so let's just look at the cerebellum, because

when I first looked at the cerebellum of the

sheep, I learned something that has never, that was

never evident to me in looking at human cerebellums.

So we're, here's the cerebellum.

This middle piece here is the vermis.

That's that central portion, and these are the lobes.

These are the lateral hemispheres, or the hemispheres of

the cerebellum, one hemisphere, two hemispheres, and here's the vermis.

Let's just make sure that we understand where that is on the human.

well, really, all you see when you look

at the cerebellum are the two hemispheres, because they

are, they have expanded to cover up the vermis,

which is, is right inside of there, underneath there.

There's the vermis.

[BLANK_AUDIO].

This is vermis in here.

Can you see that?

Okay, good.

So, so, almost, the, the bulk of the human cerebellum is hemisphere.

The vast majority of the cerebellum of the sheep is

vermis, and that is because the vermis is going to deal

with things on the midline, so the trunk, the axis, the

posture and gait and eye movements and speech.

Well, sheep is not speaking but we're speaking.

But these are dealing with the limbs and most importantly with the hands and the

feet, but the sheep don't have digits, so they have a very small hemisphere.

The really cool thing that I learned by looking

at sheep cerebellum is, look at this, is it symmetrical?

Is the vermis symmetrical?

Well, not so much.

You can see that it takes a jog, look at that.

It takes a jog.

So I, I saw that, I saw that on one sheep brain, and then I saw

it on a second sheep brain, and then I saw it on a third sheep brain, and

then I went back and I found in the anat, neuronotamy books that in fact everyone's

known that or, may, people may have forgotten

it, but people knew it for a long time.

The explanation, there is no explanation for it.

There's no, sort of, just so story as to why that would be, but it's very

interesting that the vermis takes a jog, and

the vermis of the human takes a jog too.

[MUSIC]

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