alpha rhythm


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Related to alpha rhythm: beta rhythm

alpha rhythm

or

alpha wave

n
(Physiology) physiol the normal bursts of electrical activity from the cerebral cortex of a drowsy or inactive person, occurring at a frequency of 8 to 12 hertz and detectable with an electroencephalograph. See also brain wave

al′pha rhythm`


n.
a pattern of slow brain waves (al′pha waves`) in normal persons at rest with closed eyes, thought by some to be associated with an alert but daydreaming mind.
[1935–40]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.alpha rhythm - the normal brainwave in the electroencephalogram of a person who is awake but relaxed; occurs with a frequency of 8-12 hertz
brain wave, brainwave, cortical potential - (neurophysiology) rapid fluctuations of voltage between parts of the cerebral cortex that are detectable with an electroencephalograph
References in periodicals archive ?
How the alpha rhythm manages to affect learning is something we investigate with computer models," said PD Dr.
Kennedy argued that the EEG alpha rhythm is not a result of cellular activity but rather is an artifact due to the gross physical properties of materials from which the recordings are made (i.
l l l l l l PAUL CARBERRY , taken to hospital after suffering a fall on Alpha Rhythm at Kilbeggan on Saturday evening, will not resume until Saturday.
At sleep onset, the occipital EEG activity changes from a highly rhythmic, well-organized alpha rhythm to a lower-amplitude, more desynchronized EEG.
This three-miler will take some getting but Moscow Court is blessed with stamina and is preferred to Alpha Rhythm.