Why does the brain have no pain receptors? Shouldn’t it considering it’s one of the most vital organs.

Question

Why does the brain have no pain receptors? Shouldn’t it considering it’s one of the most vital organs.

In: 4

Answer 1

There would be no evolutionary benefit for the brain to have pain receptors. Pain receptors exist elsewhere because it would signal to the brain to take a reflexive action. There are pain receptors *around* the brain which would trigger the reflex to protect the brain. But the brain itself has no pain receptors because it cannot act on those impulses.