beta wave

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be·ta rhyth·m

a wave pattern in the electroencephalogram in the frequency band of 18-30 Hz.
Synonym(s): beta wave
Farlex Partner Medical Dictionary © Farlex 2012

beta wave

n.
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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

beta wave

An electroencephalographic deflection. Its frequency is between 18 and 30 Hz. See: beta rhythm
See also: wave
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Players can then access the game in a playable alpha or beta state until its development is completed and it is ready for release.
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The products are in early beta state and the team would like to know your feedback.