时差N小时 如何判断自己的身体向上还是向下(上)（在线收听）

Your body uses three senses to keep you balanced–to tell you what's up and down.

人体有三种感官能够帮助维持平衡，并告诉我们向上还是向下。

One of the senses is your eyes. They tell you how you're oriented with the world around you.

第一种感官是视觉。视觉会告诉你在周遭环境中的方位。

Then there's your body sense. It's the seat-of-the-pants pressure you feel in your muscles and joints from gravity and movement.

第二种是我们的身体感受。即通过人体肌肉的直觉并结合重力和动作进行感知。

Finally, there are the semi-circular canals of your inner ears.

最后一种是我们内耳的半规管。

These canals are lined with tiny hairs and filled with liquid.

这些规管上覆有微小的毛状纤维，纤维里充满了液体。

When you move, the fluid bends the hairs, and they tell your brain what's happening.

当你移动的时候，液体会导致毛状纤维弯曲，进而告知大脑讯息。

But if you lose your visual clues, the other senses can trick you. It's called spatial disorientation, or vertigo.

但是如果你丧失了视觉感官，那么另外两种感官方式可能会误导你。这被称为空间定向障碍，即眩晕。