a pattern of slow brain waves (alpha waves) in normal persons at rest with closed eyes, thought by some to be associated with an alert but daydreaming mind.
alphaRead more in this article about some frequently asked questions and fun facts related to our definitions.
alpha femaleRead more in this article about some frequently asked questions and fun facts related to our definitions.
- alpha particle,
- alpha privative,
- alpha radiation,
- alpha ray,
- alpha receptor,
- alpha stock,
- alpha test,
- alpha wave,
- alpha-adrenergic blocking agent
Origin of alpha rhythm
1935–40; earlier alpha waves, translation of German Alphawellen, term used by their discoverer, German physician Hans Berger (1873–1941)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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 electroencephalographSee also brain wave
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