beta rhythm


noun

a pattern of high-frequency brain waves (beta waves) observed in normal persons upon sensory stimulation, especially with light, or when they are engaging in purposeful mental activity.

Origin of beta rhythm

1935–40; earlier beta waves, translation of German Betawellen; see alpha rhythm

British Dictionary definitions for beta rhythm

beta rhythm

beta wave


noun

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

Medical definitions for beta rhythm

beta rhythm

n.

The second most common waveform occurring in electroencephalograms of the adult brain, characteristically having a frequency from 13 to 30 hertz. It is associated with an alert waking state but can also occur as a sign of anxiety or apprehension. beta wave