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Quite literally. How come when we feel "confused", we start getting the need to expel the contents from our stomach?

I get that we get sea-sick because of "mixed signals" coming in to our brain. But why do we feel nauseous? How come the centre of the problem becomes the stomach, and not some sort of heightened sense of needing to find balance?

Hope this question makes at leasr some sense. Thanks!

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[-] ImplyingImplications@lemmy.ca 92 points 1 year ago

There's a part of your brain called the chemoreceptor trigger zone which triggers the vomiting reaction. Dizziness is one of the things which can activate this zone. It's thought that since dizziness is a common side effect of poisons, we've evolved to vomit whenever we're dizzy.

[-] otter@lemmy.ca 10 points 1 year ago* (last edited 1 year ago)

That might bring up a follow-up question

why is dizziness a common side effect of poisons

My guess was that some poisons affect the nerves, or decrease blood supply to the brain? I don't have anything more specific though

[-] NeoNachtwaechter@lemmy.world 12 points 1 year ago* (last edited 1 year ago)

some poisons affect the nerves

Many poisons (for example, alcohol) affect the nerves directly, i.e. the transport of the electric there. The first impact is that the brain (and the spinal cord of course) does not receive the sensoric info properly anymore. And then the body does not follow the brain's commands anymore.

[-] otter@lemmy.ca 1 points 1 year ago

So once the signals get mixed up, the dizziness sets in?

[-] Rhynoplaz@lemmy.world 5 points 1 year ago

It's like your brain is trying to control your legs but the server is overloaded and the lag is terrible.

[-] Prandom_returns@lemm.ee 3 points 1 year ago

Makes sense, thank you!

this post was submitted on 01 Sep 2023
86 points (93.9% liked)

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