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!

  • @[email protected]
    108•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.

    • TedescheEnglish
      46•1 year ago

      I was going to respond to the OP, but I only knew how an inner ear imbalance causes dizziness, not how said dizziness triggers the vomiting reflex. Thanks!

      For those who want to know, there’s fluid in your inner ear and receptors that can detect where the fluid is, as well as where it ends (it’s surface). Your brain uses this system like a level to determine your head’s orientation to the ground, and if something fucks with the fluid in a way the brain can’t make sense of, you feel dizzy (the sensation of not knowing your orientation to the ground).

    • OtterEnglish
      10•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 related to balance, or decrease blood supply to the brain? I don’t have anything more specific though

      • @NeoNachtwaechter
        12•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.