你根本看不见（视觉魔术）：英语精读讲义

Your eyes help you see the world,

你的眼睛帮助你看见这个世界，

but you can't see this dot.

但你却看不见这个圆点。

No, seriously,

不，说真的，

if you close your left eye,

如果你闭上左眼，

stare at this crosshair with your right eye,

用右眼盯着这个十字准星，

and slowly move your head towards or away from the screen, 短語搭配

然后慢慢让头部靠近或远离屏幕，

the dot will disappear,

这个圆点就会消失，

revealing the exact location of your blind spot. 講解

从而准确显示出你盲点的位置。

The cells at the back of your eye transform light into signals 短語搭配

你眼球后部的细胞会把光转化成信号，

that are sent to your brain, 語法

再将信号传送到大脑，

but they are missing right here

但这里恰好没有这些细胞，

because this is where nerves and blood vessels connect to the eye.

因为神经和血管正是在这里与眼球相连。

So, anything at that point in your vision you can't see,

所以，视野中落在这个位置上的任何东西，你都看不见，

aka your blind spot. 用詞

这就是所谓的盲点。

If we add a line through the image and you try again,

如果我们在图中加一条贯穿画面的线，然后你再试一次，

you'll notice that your brain fills in information 短語動詞

你会发现大脑会自动补全信息，

and makes you think the line is continuous 語法

让你以为这条线是连续的，

instead of there being a hole in your vision. 語法

而不是觉得视野中间有个缺口。

You also can't see all 12 of these black dots at once

你也无法同时看到这12个黑点，

for a similar reason.

原因也与此类似。

Go ahead and try. 語氣意圖

来试试看吧。

Chances are you'll only see a fraction of them at once. 短語搭配

你很可能一次只能看到其中一小部分。

The exact point your eye looks at is focused,

眼睛正注视的那个点能清晰成像，

but your peripheral vision isn't great, 用詞

但你的周边视觉没那么好，

and so your brain often makes assumptions for what's there.

所以大脑常常会对那里有什么作出推测。

Because of the consistent gray line pattern,

由于灰色线条的图案始终一致，

your brain assumes the rest of the image is just like that

大脑便认定图像的其余部分也是如此，

and misses the black dots until you look directly at them.

直到你直视黑点时，才会注意到它们。

These two rectangles are flashing out of phase with each other, 用詞

这两个矩形闪烁时彼此不同步，

right?

对吧？

How about now?

那现在呢？

For most,

对大多数人来说，

the rectangles will now seem to be flashing at the same time, 語法

现在，这两个矩形看起来会同时闪烁，

in phase,

也就是同步闪烁，

but they aren't at all.

但实际上它们根本不同步。

And yet, 表達脈絡

然而，

if we move these shapes beside them just a few pixels,

如果我们把它们旁边的这些图形移动几个像素，

you'll begin to see them out of phase again.

你就会再次看出它们并不同步。

The surrounding area has a direct impact on how you see and perceive things, 短語搭配

周围区域会直接影响你看待和感知事物的方式，

even if the result isn't correct. 語法

即使你感知到的结果并不正确。

Not convinced? 語氣意圖

还不相信？

Look at these flashing squares.

看看这些闪烁的方块。

Except what you might not have seen 語法

不过，你可能没有发现，

is that the middle square isn't flashing at all.

中间的方块其实根本没有闪烁。

If we remove the outer square,

如果我们移除外层的方块，

we see it for what it is, 習語

就能看清它本来的样子，

a solid color.

一整块纯色。

Now,

现在，

try reading the sentence inside it.

试着读一读里面的句子。

Did you catch the extra word? 用詞

你发现那个多出来的词了吗？

Your brain doesn't always notice mistakes like these 語法

你的大脑并不总能注意到这类错误，

because it doesn't affect your comprehension of the sentence,

因为它们不会影响你理解句子，

and your brain would prefer to act quickly 語法

而且你的大脑更愿意迅速行动，

rather than to be perfectly accurate.

而不是做到完全准确。

Try staring at the middle dot in this illusion.

试着盯着这个错觉图中央的圆点。

When the picture isn't moving,

当画面静止时，

the colors are clearly changing quickly,

颜色显然在快速变化，

yet when the image starts rotating, 表達脈絡

然而，当图像开始旋转时，

the color change either seems non-existent or much slower. 語法

颜色变化看起来要么根本不存在，要么慢了许多。

Our eyes and brain have evolved to see,

我们的眼睛和大脑经过进化，让我们能够看见，

but our vision makes assumptions based on learning,

但视觉会根据学习经验、

memory,

记忆

and expectation,

和预期作出推测，

and all of these illusions take advantage of this adaptation. 短語搭配

而所有这些错觉都利用了这种适应机制。

It's an advantage to have rapid information processing,

快速处理信息是一种优势，

so instead of taking in every bit of detail to be 100% accurate, 短語動詞

因此，大脑不会为了百分之百准确而接收每一个细节，

which would cause a brain overload, 語法

因为那会让大脑不堪重负，

your brain makes assumptions.

而是会作出推测。

This faster perception allows for faster reflexes 短語動詞

这种更快的感知方式能让人反应更迅速，

and faster conscious and unconscious decisions,

也能更快地作出有意识和无意识的决定，

an integral aspect of human nature. 短語搭配

这是人性中不可或缺的一环。

Much like this halo, 表達脈絡

就像这个光环一样，

if you stare at the center dot for long enough,

如果你长时间盯着中央的圆点，

the brain will simply make it disappear.

大脑会直接让它消失。

It makes an assumption that the information is unchanging or unimportant,

大脑会认定这些信息没有变化或并不重要，

and as a result, 表達脈絡

结果，

you can't see it.

你就看不见它了。

Love tricking your brain with illusions?

喜欢用错觉捉弄自己的大脑吗？

We've put together a playlist of our favorite ones

我们把最喜欢的错觉视频整理成了一个播放列表，

that you can watch by clicking the screen.

点击屏幕就能观看。

Don't forget to subscribe for more weekly fun science videos.

别忘了订阅，收看我们每周更新的更多趣味科学视频。