brainwave

n.	1.	rapid fluctuations of voltage between parts of the brain.
	2.	the clear (and often sudden) understanding of a complex situation.

Noun	1.	brainwave - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph Synonyms: brain wave, cortical potential
	2.	brainwave - the clear (and often sudden) understanding of a complex situation Synonyms: brainstorm, insight

alpha rhythm, alpha wave, beta rhythm, beta wave, bioelectricity, brain wave, cortical potential, delta rhythm, delta wave, neurophysiology, theta rhythm, theta wave