simple absence
(sĭm′pəl)- A brief loss or impairment of consciousness accompanied by the abrupt onset of spasms or twitchings of cephalic muscles that produce a 3 per second pattern of spikes and waves on an electroencephalogram.pure absence
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.