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Why don't I remember being a baby? - Video học tiếng Anh
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Why don't I remember being a baby?
Why don't I remember being a baby?
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คำบรรยาย (37)
0:00
What’s the earliest memory you have?
0:02
I've got bad news: It’s probably fake…
0:05
According to neuroscientists, anyone who says they
0:07
remember being a baby is probably lying (but they don’t even know it)
0:10
So what’s going on? Psychologists did an
0:12
experiment where they interviewed 3-year-olds about real stuff:
0:15
Zoo trips, the first day of preschool, that kind of thing.
0:17
Then they came back years later and asked those kids to recall those memories.
0:22
Age 5, 6, or 7… remembered 60% or more of those early-life events.
0:26
But by age 8 or 9? They only remembered like 40%.
0:30
Most of that early memory was gone, and it declines quickly from there
0:34
So you didn't forget being a baby when you were a baby.
0:37
You forgot it in like second grade.
0:40
Researchers from Yale put infant babies in an MRI, which is probably easier said than done,
0:46
and they showed that a key memory area of the brain called the hippocampus
0:49
lights up when a baby locks in a photo it's never seen before.
0:53
So our memory is definitely running by about age one. The memories get made.
0:58
Something is happening to them after.
1:01
Here’s what we think is going on:
1:02
During the first few years of life, that memory region of the brain is being flooded
1:06
by new growing neurons. This shuffles around the cells that were already there,
1:12
rewiring the chain of neurons and breaking the old memory.
1:16
Research in mice suggests maybe those memories could still be hiding in there,
1:21
but just can’t be accessed. When scientists zapped the original neurons with light in mice,
1:27
some early memories came back. But we’ve never tested the same thing in humans.
1:31
Because it turns out to be hard to recruit people to get fiber optic cables shoved in their brains.
1:37
Why would a brain do this? When you’re like one, you don’t need to remember specific events as
1:41
much as you need to figure out the rules for things like language and how the physical
1:45
world works. So your brain focuses its energy on that. Still, nearly forty percent of people
1:50
say their first memory is from age two or younger.
1:54
And, somebody's probably gonna be in the comments telling me that they definitely remember being born.
1:58
But you probably don't.
2:00
All this research suggests those are almost certainly reconstructions pieced
2:04
together from family stories and photos and later memories.
2:08
So, some version of you learned language, discovered what gravity was, and all those other things.
2:14
But sadly, you can never meet that version of yourself.
2:17
Follow me for more cool science videos.
