with the human brain which when sleep deprived, prioritizes NREM sleep over REM sleep, implying that the NREM sleep is responsible for regulating and compensating for missed sleep. References Further reading Iber, C; Ancoli-Israel, S; Chesson, A; Quan, SF. for the American Academy of Sleep Medicine. The AASM Manual for the Scoring of Sleep and Associated Events: Rules, Terminology and Technical Specifications. Westchester: American Academy of Sleep Medicine; 2007. Dream Sleep physiology Parasomnias