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

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.

beta wave

An electroencephalographic deflection. Its frequency is between 18 and 30 Hz. See: beta rhythm
See also: wave
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.
The HUMENA Beta state is significant for feelings of calmness, power, clarity of mind, and power of spirit.
The products are in early beta state and the team would like to know your feedback.