But after only moments of reading, you start feeling dizzy, fatigued and nauseous.

但是，只閱讀了一小段時間後，你就開始覺得頭暈、疲勞和噁心

Sounds like motion sickness...

好像是暈車了

The surprising truth is that about 30 percent of the population experiences motion sickness

令人驚訝的事實是，有 30% 的人口都有暈車的問題

with over 66 percent of people experiencing it in extreme conditions.

而有超過 66% 的人是在極端的情況下遇到的

This happens when your eyes and inner ear are sending different signals to the brain.

這是當你的眼睛和內耳傳送不同的訊號到腦部所造成的

The vestibular system inside your ear contributes to balance and spatial orientation.

你耳內的前庭系統是用來維持平衡和在空間中定位的

Tiny hairs inside the canal detect the movement of a fluid inside it

管內的細毛偵測內部液體的流動

allowing you to orient yourself.

讓你能夠適應環境

If you lean to the side, the fluid moves and signals are sent to your brain to help you understand this.

如果你偏向某一邊，液體就會流動，訊號也會被送到你的大腦，好讓你自己知道

But oftentimes, in a car, on a boat, or in the IMAX theatre

但時常，在車子裡、在船上或是在超感官電影院內

your vestibular system is transmitting a different signal from your other senses.

你的前庭系統與其他感官傳送的訊號不同

In the case of your car, your eyes see that everything in the car is seemingly stationary,

就你的車子而言，你的眼睛看到的是，在車內的所有東西都看起來是不動的

particularly when you stare at a book.

尤其是當你正盯著你的書看時

But your ears feel the movement of the car.

但是你的耳朵感覺到車子的移動

Conversely, in the IMAX theatre, your eyes see a lot of motion while your ear is experiencing very little movement at all.

相反的，在超感官電影院內，你的眼睛看到了許多的動作，然而，你的耳朵只感受到些微的震動

This mismatch of signals tells the brain something's wrong.

這種無法配合在一起的訊號，告訴大腦有異狀

So why does it induce vomiting?

所以，為什麼這會導致嘔吐呢？

The leading theory suggests that, evolutionarily, if the input signals from your ears and eyes weren't matching,

主導理論說，如果從你的眼睛和耳朵輸入的訊息互不吻合

you'd likely ingested a neurotoxin.

就如同攝入了神經毒素

The easiest way to get rid of it? Throw it up.

最簡單的消除方式？吐出來

This was a fairly useful and accurate system before the advent of technology and advanced transportation.

在科技的和便捷的交通出現之前，這是一個相當有用又精確的系統

Too bad the brain never got the memo.

很糟糕的，大腦從沒拿到通知書

Got a burning question you want answered?

有個問題很想問嗎？

Ask it in the comments or on Facebook and Twitter.

在下方的留言處詢問，或是在臉書和推特上留言

And subscribe for more weekly science videos.

也記得訂閱我們的頻道，以觀賞更多一週一次科學影片