Casey Schwartz on the "alpha" brain wave wreaking havoc on your sleep.
Roughly you might say it generates and radiates like our brain wave.
"Must have been what they call a brain wave," suggested Peggy, audaciously.
Say, Earl, about how long does it take to find out a guy's brain wave band?
Now, out with those lights—and let's go over to the "brain wave."
Seized with a brain wave, they lit a fire upon the centre of the bridge.
brain wave n.
A rhythmic fluctuation of electric potential between parts of the brain, as seen on an electroencephalogram.
A sudden useful idea; brainstorm: Lou had a brain wave. He offered the boy a C note to let him drive (1890s+)