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David S asked in Science & MathematicsMedicine · 1 decade ago

How come some people DON'T get seasick?

People have motion sickness because their brain gets confused with all the contradicting sensory inputs from sight, feel and inner ear. Because of the contradicting information the brain thinks that the body has ingested something toxic and causes us to spew.

It seems to me that everybody has this contradicting set of sensory inputs. So how come certain people don't get motion sickness?

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  • 1 decade ago
    Favorite Answer

    Nausea/vomiting is a very complicated subject, and involves input from the visual & vestibular system, as well as from the gut. There is an emotional component involved also, and several areas of the brain are involved.

    If you get it figured out, we'd love to hear from you. Prevention and treatment of post-operative nausea and vomiting is one of the things we work hard to achieve in anesthesia, and I know the oncologists have a tough time of it with chemotherapy patients.

    Source(s): I'm an anesthesiologist.
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