How Sensitive Is the Brain to Pain?

The brain has no pain receptors, so brain surgery can be performed on
completely conscious patients.

The human brain itself cannot feel pain, but it is very much a part of
detecting pain everywhere else in the body. Stub your toe and impulses are
immediately relayed to the brain through the spinal cord. The brain tries
to make sense of the event and often triggers responses elsewhere -- but it
never actually feels the pain. That’s why in some cases, brain surgeons
can perform procedures while a patient is still awake.

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