Name: 【TED-Ed】左腦與右腦的神話--伊麗莎白-沃特斯。 (【TED-Ed】The left brain vs. right brain myth - Elizabeth Waters)
Uploaded: 2021-01-14T06:59:41.000Z
Duration: 4 min 12 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

情態副詞

it's lumpy landscape visibly split into a left and right side.

This structure has inspired one of  the most pervasive ideas about the brain,

And yet, this is a myth unsupported by scientific evidence.

So how did this misleading idea come about,

It's true that the brain has a right and a left side.

This is most apparent  with the outer layer, or the cortex.

appear to be made from continuous tissue,

but in fact, they're also organized with left and right sides.

The left and the right sides of the brain do control different body functions,

The brain's right side controls the motion of the left arm and leg and vice versa.

Each eye has a left  and right visual field.

Both left visual fields are sent to the right side of the brain,

and both right fields  are sent to the left side.

So the brain uses both sides to make a complete image of the world.

Scientists don't know for sure why we have that crossing over.

One theory is it began soon after animals developed more complex nervous systems

because it gave the survival advantage of quicker reflexes.

If an animal sees a predator coming from its left side,

So we can say that vision  and movement control are two systems

but problems arise when we over-extend that idea to logic and creativity.

This misconception began in  the mid-1800s

when two neurologists, Broca and Wernicke,

examined patients who had problems communicating due to injuries.

The researchers found damage to the patients' left temporal lobes,

so they suggested that language is controlled by the left side of the brain.

then introduced the idea  of a logical left hemisphere

competing with an emotional  right hemisphere

represented by his characters Dr. Jekyll and Mr. Hyde.

But this idea didn't hold up when doctors and scientists

examined patients who were missing a hemisphere

These patients showed a complete range of behaviors,

Later research showed that one side of the brain is more active than the other

So one side of the brain may do more work,

but this varies by system rather than by person.

that individuals have dominant  sides of the brain,

or to support the idea  of a left-right split

Some people may be particularly logical or creative,

but that has nothing to do with the sides of their brains.

And even the idea of logic and creativity being at odds with each other

Solving complex math problems requires inspired creativity

and many vibrant works of art have intricate logical frameworks.

Almost every feat of creativity and logic

carries the mark of the whole brain functioning as one.