|alpha rhythm or alpha wave|
|physiol See also brain wave 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|
|alpha wave or alpha wave|
alpha rhythm n.
A pattern of smooth, regular electrical oscillations, as recorded by an electroencephalograph, that occur in the human brain when a person is awake and relaxed. Also called alpha wave.