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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.