alpha-waves

Medical Dictionary

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.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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