beta wavebeta wave
any of the electrical waves from the parietal-frontal regions of the brain, having frequencies from 13 to 30 hertz: a sign of mental activity and alertness
also beta rhythm
An electrical oscillation occurring in the human brain at a frequency of about 13 to 30 hertz as recorded on an electroencephalogram, associated with a state of alert wakefulness. Also called beta rhythm .
(plural beta waves)
- (neurology) An electrical signal produced by the brain while the subject mentally active.