Bobby is holding fantastically thin slices of a mouse brain.

Rats play, but what you might not have known is that rats that play more have bigger brains and they learn tasks better, skills.

And that's just a mouse brain it's a lot smaller than a human brain.

Not mouse. Never mouse. If anything, rat.

In the 1950s, Olds and Milner put electrodes into the brain of a rat.

And we've done, in the past four years, a proof of concept on a small part of the rodent brain, and with this proof of concept we are now scaling the project up to reach the human brain.

Well, if we're a family of rats, I might as well leave, too.

At the present time, my collaborators and I, what we're aiming for is much more modest just to find partial connectomes of tiny chunks of mouse and human brain.

Scary name.

When you think for a second of the mouse on Macintosh and I will not criticize the mouse too much when you're typing what you have you want to now put something first of all, you've got to find the mouse.

Large black

Large black cursors

Large white

Large white cursors

Quite a big rat!

I had all kinds of rats, mice, hamsters, gerbils, squirrels.

And I started off by calculating how many billions of clicks there are all around the globe on all the computers.

So I did something else. I figured out 100 billion clicks per day, 55 trillion links is almost the same as the number of synapses in your brain.

I thought it was a fat mouse

Magnify around the mouse cursor

That little mouse with the big eyes.

It's a bit bigger than a mouse, sarge.

And indeed, you do see it in the human entorhinal cortex, which is the same part of the brain that you see grid cells in rats.

If we come back to our exponential growth of computing, 1,000 dollars of computing is now somewhere between an insect and a mouse brain.

Rats play, but what you might not have known is that rats that play more have bigger brains and they learn tasks better, skills.

How come mice, small as they are, are so cunning while rats are big and stupid?

Elephants are several times the size of mice.

Cat and mouse! Cat and mouse!

Most of the crew were trapped like rats.

And we do know that in domestic animals and others, when they're play deprived, they don't and rats also they don't develop a brain that is normal.

Use the laptop's pointer device to control the hero's moves, and use the keyboard to dig left and right.

And he's driving it all with this platform here, with a five finger keyboard and the world's first computer mouse, which he specially designed in order to do this system.

Resize Image Let go of all the mouse buttons.

Rats devour enormous quantities of food and other goods.

This is the ratbot, or the robo rat by Sanjiv Talwar at SUNY Downstate.

Magnify the section of the screen that is near the mouse cursor

Come on, you rumswilling rats, outside!

For instance, me and my sister, when we were little, we would compete to see who could eat the most squirrel brains.

Brain magic. What's brain magic all about?

The gray rat and black rat fought to the death.

The new brain is actually kind of easier than the old brain.

Some people say, brains can't understand brains.

Mouse

A rat!

A rat!