REM sleep

REM sleep definition - medical

REM sleep (rĕm)

noun
A stage in the normal sleep cycle during which dreams occur and the body undergoes various physiological changes, including rapid eye movement, loss of reflexes, and increased pulse rate and brain activity. Also called paradoxical sleep.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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