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1. A rhythmic fluctuation of electric potential between parts of the brain, as seen on an electroencephalogram.
2. Informal A sudden inspiration.
1. Usu., brain waves. electrical potentials or impulses given off by brain tissue. Compare alpha rhythm, beta rhythm, delta rhythm.
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|Noun||1.||brain wave - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph|
neurophysiology - the branch of neuroscience that studies the physiology of the nervous system
alpha rhythm, alpha wave - the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz
beta rhythm, beta wave - the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz
bioelectricity - electric phenomena in animals or plants
delta rhythm, delta wave - the normal brainwave in the encephalogram of a person in deep dreamless sleep; occurs with high voltage and low frequency (1 to 4 hertz)