The computer's work on his brain was no help at all.
The thought of working on the brain from another direction did hit home.
It is most often associated with pressure on the brain.
"They think I might have some kind of growth, a something on the brain," she said.
Scientists do not know exactly how it works on the brain.
Why argue with a man who has fire on the brain?
My, but you all are a little short on brains sometimes!
Why the light had such an effect on the brain is a mystery.
Idiome