beta rhythm definition by American Heritage Dictionary
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
See beta wave.
beta rhythm - Medical Definition
The second most common waveform occurring in electroencephalograms of the adult brain, characteristically having a frequency from 13 to 30 hertz. It is associated with an alert waking state but can also occur as a sign of anxiety or apprehension. Also called beta wave.
Variant of beta 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