What prevents people in a coma from waking up?

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Probably a very stupid question but I can’t wrap my head around it. For instance if someone had head trauma, why can they not wake up after a few days or so? What is it that keeps them unconscious for such a duration of time with nothing to wake them?

Edit: i’m confused why this got so many upvotes but thanks😁

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Anonymous 0 Comments

Mostly that they aren’t asleep — they are operating on minimal brain function.

And to your question, most people come out of coma after a couple of weeks, it just isn’t like in the movies where they are instantly alert and responsive.

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