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The ancient Greeks and Romans knew about motion sickness. Even NASA has made note of it. So if you have this common ailment, you’re part of a long tradition.
There are ways to prevent or treat it to keep your travels or trip to the amusement park a pleasant one.
You get motion sickness when there are conflicts among your senses. Say you’re on a ride at the fair, and it’s spinning you around and upside down. Your eyes see one thing, your muscles feel another, and your inner ears sense something else.
Your brain can’t take in all those mixed signals. That’s why you end up feeling dizzy and sick.
Your inner ears, in particular, help control your sense of balance. They are part of a network called the vestibular system.
This system includes three pairs of semicircular canals and two sacs, called the saccule and the utricle. They send information about what’s going on around you to the brain.
The semicircular canals hold a fluid that moves with the turns of your head. The saccule and utricle are sensitive to gravity. They tell the brain whether you’re standing up or lying down.
Your brain takes in all this data, and it usually comes together and makes sense. But sometimes your brain gets confusing signals.
On a flying plane, for example, you feel like you’re moving, but your eyes tell your brain that you don’t appear to be going anywhere. The opposite is true as well. After a long sea voyage, you can stand still on dry land but still feel like you’re moving.
The result is the same: motion sickness.