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Your Brain on Tech
Lernstatistiken
GER-Niveau
Schwierigkeit
Untertitel (717 Segmente)
Oh, hello.
Technology isn't just changing our lives.
It's changing our brains.
Not just how they think,
but how they look.
It's been shown that playing certain video games for hours
can improve your memory for details,
your ability to navigate space
in video games,
and can make your brain--
well, certain parts of it-- bigger.
But scientists want to know if exploring digital worlds
can change our brains in ways that improve our ability
to navigate the real world.
To find out, we've built a giant maze
to test their theories for the first time ever
outside the world of computers.
And my job?
I'm the lab rat.
[theme music playing]
[vacuum humming, stops]
Our brains have been profoundly transformed
by our interactions with technology.
A lot of the information that I used to have to store
in my brain is now stored in my phone.
My contacts, my schedule.
In many ways, I've delegated
what used to be done by this organ
to this new external organ.
Doing that frees up by brain's resources
for other things that matter
or that technology can't quite do for us yet.
So while we all don't have implants in our brains yet,
technology has already found a way into our heads,
which is why you may find it deeply disturbing
to see me do something like this.
Sh--
[music playing]
[Michael] Studies show we can improve our brains
by having enriching experiences,
even by playing video games.
To learn more about this,
I came to UC Irvine's Stark Lab to speak with experts
in the field of learning and memory.
So Dane and Craig, you guys work on
learning and memory.
- What about them? - So the lab is trying to figure out
how memory works, how it works in the brain.
And one brain structure, in the temporal lobe
that we know is important to memory is
the hippocampus.
So what does the hippocampus do?
We know it has a role in memory
and, really, a certain kind of memory.
The hippocampus is really involved
when you need to rapidly form new arbitrary associations.
You know, remembering what you did yesterday
definitely needs the hippocampus.
Maybe we'll go the store, we park our car in the lot,
and we need to be able to remember
not just, "I parked my car in the lot,"
"I parked my car in this exact spot in the lot."
- [Michael] Right. - [Craig] And those details,
that's what the hippocampus seems to be really be
helping us out on.
And you keep looking down at this piece of chewed
bubblegum on the book, is that a hippocampus?
[Craig] Yes. This actually is my hippocampus.
Is this the whole thing or is it symmetric...
That's it--
Oh, there's one on the other side.
That looks just like this?
Yeah, mirror image of it.
[Michael] In 2015, Dr. Stark and Dr. Clemenson,
conducted a study to show
how video games affect the brain.
They gathered participants
who normally didn't play video games
and split them up into three groups.
A control group who didn't play
any video games for two weeks, an active control group
who played two-dimensional games for two weeks,
and an experimental group
who played 3D games for two weeks.
Beforehand, they had all the participants
perform two virtual tasks on computers
to measure their spatial memory.
As soon as they came back, we re-administered those two tasks.
And what we found was that the people who played the 3D game
saw an improving in their test scores,
whereas the control group
and active control group did not.
We didn't do brain scans,
but we can speculate that there were changes
to the experimental group's hippocampi.
So what are we going to be doing to me here?
So we're gonna do everything that we've done before
in our past studies,
except we're gonna add two new things.
Uh, the first is we're gonna add some brain scans,
so we're gonna see if we see a change
in the structural side of your hippocampus.
We've never actually looked at somebody's brain scans
before and after they played video games.
And the second thing we're actually gonna do
is we're gonna put you through a real-world space.
You're gonna be the rat in a maze.
[Michael] This truly untested territory.
The effect of video-gaming on spatial memory
has never been studied in a physical environment
on a scale this big and comprehensive.
I will have to navigate my way
through a 3,600-square-foot physical maze.
Will playing video games improve my mental skills
in the real world?
If so, society may start looking
at gaming in a whole new way.
First, we had to get
baseline measurements of my brain.
Welcome to the MRI Center.
We're gonna be taking a whole series of scans of you,
as the before scan
to then see what's gonna be happening to your brain
as a function of actually doing the gaming.
Cool. What kind of things are you looking for?
Changes in the size and shape of your hippocampus
and also changes in the connectivity between brain regions.
[Michael] My brain was scanned using diffusion MRI,
with a special emphasis
on my all-important hippocampus.
[music playing]
[Craig] So this first test
is a standard memory test that we do.
It's called an object recognition memory test.
[Michael] This test began by showing me
a series of random objects.
I did my best to commit every one of them to memory.
Okay.
- Finished. - All right.
What we're gonna do now though, is we're gonna test
- your memory for those objects. - Okay.
And this is actually where it starts to tap
into the hippocampus that we know is so important
for things like spatial memory.
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