The human body cycles through two phases of sleep: rapid eye movement (REM) sleep and nonrapid eye movement (NREM) sleep, with NREM sleep further divided into three stages (N1 to N3).

Authors

• Person: Not available Organization: National Library of Medicine
  Physiology, Sleep Stages - StatPearls - NCBI Bookshelf - NIH

Sources

• Physiology, Sleep Stages - StatPearls - NCBI Bookshelf - NIH www.ncbi.nlm.nih.gov National Library of Medicine via serper

Referenced by nodes (1)

• REM sleep concept