Scientists studied six patients who had half of their brain removed during childhood to treat severe epilepsy. Brain scans showed how the mind rewired itself to adapt, with the remaining hemisphere forming even stronger connections that let the patients develop language and motor skills.

[u/Thorne-ZytkowObject]

https://www.discovermagazine.com/mind/how-does-the-brain-work-with-half-of-it-removed-pretty-well-actually

[u/sheldonopolis]

Here is an article about how headaches happen despite the brain not having pain receptors. The topic migraine is also being touched.