incoherent, idle thoughts "at the top of the brain"

Eggcorn of rack one's brains.

Alternative form of rack one's brain

Eggcorn of rack one's brain.

(idiomatic) To struggle to think or remember something.

(medicine) A traumatic injury to the brain caused by an external force.

(dated) attention deficit hyperactivity disorder

plural of traumatic brain injury

(surgery) A neurosurgical procedure involving the implantation of a medical device called a neurostimulator which sends electrical impulses, through implanted electrodes, to specific parts of the brain for the treatment of movement and affective disorders

Alternative form of pick someone's brain