Sleep occurs in five stages: wake, N1, N2, N3, and REM, with stages N1 to N3 classified as non-rapid eye movement (NREM) sleep.

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)

• nitrous oxide concept