Why does the brain, despite being a very vital organ, not have any pain receptors?
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Evolution is a sieve for being more fit to survive particular circumstances than other organisms. There’s no evolutionary pressure for the brain to feel pain. Almost every circumstance where the brain would feel pain that would be an evolutionary pressure is handled by the skull and accompanying blood vessels’ ability to feel pain already. If the brain is damaged in a way that doesn’t cause pain to any other body part, the organism is typically already dead.
Evolution is a sieve for being more fit to survive particular circumstances than other organisms. There’s no evolutionary pressure for the brain to feel pain. Almost every circumstance where the brain would feel pain that would be an evolutionary pressure is handled by the skull and accompanying blood vessels’ ability to feel pain already. If the brain is damaged in a way that doesn’t cause pain to any other body part, the organism is typically already dead.
because it would be debilitatingly painful and anything that probably did have that probably killed themselves before reproducing. That or they screamed in agony so much a predator found them and ate them before they got to reproduce.
because it would be debilitatingly painful and anything that probably did have that probably killed themselves before reproducing. That or they screamed in agony so much a predator found them and ate them before they got to reproduce.
Well, how would that be advantageous? In what situation would feeling brain trauma help survival?
Pain is useful when you can act in response to it. A lot of internal trauma isn’t survivable in the wild, so having a pain response to it doesn’t lead to higher survival chance, and it doesn’t translate to that trait being selected for.
Well, how would that be advantageous? In what situation would feeling brain trauma help survival?
Pain is useful when you can act in response to it. A lot of internal trauma isn’t survivable in the wild, so having a pain response to it doesn’t lead to higher survival chance, and it doesn’t translate to that trait being selected for.
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