beta rhythm


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Related to beta rhythm: alpha rhythm, delta rhythm

beta rhythm

n.

beta rhythm

or

beta wave

n
(Physiology) physiol the normal electrical activity of the cerebral cortex, occurring at a frequency of 13 to 30 hertz and detectable with an electroencephalograph. See also brain wave

be′ta rhythm`


n.
a pattern of high-frequency brain waves (beta waves) observed in normal persons upon sensory stimulation, esp. with light, or when they are engaging in purposeful mental activity.
[1935–40; translation of German Betawellen; see alpha rhythm]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.beta rhythm - the normal brainwave in the encephalogram of a person who is awake and alertbeta rhythm - the normal brainwave in the encephalogram of a person who is awake and alert; occurs with a frequency between 12 and 30 hertz
brain wave, brainwave, cortical potential - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph
References in periodicals archive ?
Pfurtscheller, "Central beta rhythm during sensorimotor activities in man," Electroencephalography and Clinical Neurophysiology, vol.
The index of high-frequency beta rhythm for both images in planar and three-dimensional perception is higher in all leads in the right hemisphere.
For our analysis, DTF was computed for the networks formed at the frequency bands of alpha rhythm at 8-12 Hz ("alpha networks") and beta rhythm at 13-30 Hz ("beta networks"), as those are considered the brainwaves most relevant to the sensorimotor processes [73].
On the left side, the previous beta rhythm was converted to alpha (8 Hz) with amplitude of 49 [micro]V.
EEG oscillation activity in beta rhythm is associated with motor cortical function [17, 19, 20], and a significant increase of EEG-EMG and EMG-EMG coupling in the beta frequency band induced by muscle fatigue has been revealed in many studies [15, 21, 22].
Beta rhythm amplitudes are seldom larger than 30 V.
Response preparation and inhibition: the role of the cortical sensorimotor beta rhythm. Neuroscience 2008; 156:238-246.
Suppression of the beta rhythm while listening to transposed versions of the learned melody indicates a role for motor system associations with the sequential aspects of an auditory stimulus.