时差N小时 眼球可以保持不动多长时间?(下)

Researchers at the University of Delaware have a good guess.

特拉华大学的研究人员有个很好的猜想。

They have done studies that show the brain is always extending the boundaries of what it sees-- adding in made-up information along the edges.

他们所做的研究表明，大脑总是人为扩充我们的视野范围——添加一些虚构的信息。

This process is called "boundary extension," and it seems to be going on all the time. Say you're looking at a brick wall.

此过程称为“边界扩展”，而且一直进行着。假设你盯着一堵砖墙。

You really only see a small section of it, but your visual processing system essentially¹ says, "I can assume that beyond my visual fieldon either side are more red bricks,

你只是看到了一小部分，但你的视觉处理系统会告诉你，“我视线之外的一边会有更多的红砖头，

so for now I'll just add them in until I get better information."

那么我就会一直给自己输入这种信息直到我真的看到那一边为止。”

That process of constantly extrapolating on what you see may be what allows you to experience a calm and consistent visual world,

不断推断所看到的事物的过程可能会让你体验到静、一致的视觉世界，

even though the actual data coming in is much more fragmented.

即使事实上你接收到的信息是碎片式的。

1 essentially   

adv.本质上，实质上，基本上

参考例句：

• Really great men are essentially modest.真正的伟人大都很谦虚。
• She is an essentially selfish person.她本质上是个自私自利的人。