brain wave n 1: (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph [syn: {brainwave}, {brain wave}, {cortical potential}]
18 Moby Thesaurus words for "brain wave": automatic response, blind impulse, brainstorm, drive, fancy, flash, fleeting impulse, gut response, impulse, inspiration, instinct, involuntary impulse, natural impulse, notion, quick hunch, reflex, sudden thought, urge