eli5: How does getting hit in the jaw result in a knockout?

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I like to watch videos of people fighting from time to time and kept seeing videos of people getting put to sleep via jaw shot. How does this work? How does the brain immediately go unconscious like that? What causes the brain to shut off so quickly?

In: Biology

11 Answers

Anonymous 0 Comments

The direct hit into the jaw itself doesn’t cause a knockout, it’s the concussion itself.

If you get hit really hard in the jaw, imagine a shockwave that gets sent throughout your body. The force of the shockwave is primarily through your skull which houses your brain. As a result of this shockwave, your head will rapidly swing back and cause your brain to slam into your skull which is what causes the knockout.

By your brain slamming into your skull, it essentially damages a part of your brain and causes you to go unconscious. You ever see in movies where a villain slams a bottle at a character’s head and they fall unconscious? Essentially the same thing.

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