beta rhythm

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Related to Beta Activity: beta rhythm, alpha activity

beta rhythm

[′bād·ə ‚rith·əm]
(physiology)
An electric current of low voltage from the brain, with a pulse frequency of 13-30 per second, encountered in a person who is aroused and anxious.
References in periodicals archive ?
Brown, "The highs and lows of beta activity in cortico-basal ganglia loops," European Journal of Neuroscience, vol.
Our findings suggest cortical neural signaling utilizes alpha-beta phase coupling during cognitive processing states, where beta activity has been implicated in shifting cognitive states [17, 18, 27, 28].
The obvious beta activity occurred in 28 patients (53.8%); a low-amplitude beta frequency of 21-30 Hz was the main pattern (89.3%).
(16.) Ray WJ, Cole HW EEG alpha activity reflects attentional demands and beta activity reflects emotional and cognitive processes.
They also found that delta, theta and beta activity increased during and following exercise.
As indicated above, the literature has been inconsistent in regards to interpretation of the functional significance of beta activity. It is likely that the audience results in an increase in global cortical arousal, as beta has often been linked to increased cortical activity.
The brain of the insomniac remains more activated, even during sleep: Beta activity, which is associated with wakefulness, is increased over normal levels, and activity in the anterior cingulate and medial orbital frontal cortex, associated with alertness and attention, is higher.
The finding of beta activity in the left frontal region, F7, also corresponds with a previous finding by Alexander of activity in this same area by another selected participant during a psi task.
Gross alpha and beta activity (Bq/kg w.w.) mean, range, and sample size for caribou bone and muscle for all caribou and by region of nor thern Alaska.