摘要: … NonREM sleep can be further subdivided into sleep stages 1–4 (S1–S4), which resemble the depth of sleep, inasmuch as responsiveness to external stimuli is minimal in sleep stage 4. …
Pierre Maquet, Steven Laureys, Philippe Peigneux, Sonia Fuchs, Christophe Petiau, Christophe Phillips, Joel Aerts, Guy Del Fiore, Christian Degueldre, Thierry Meulemans, André Luxen, Georges Franck, Martial Van Der Linden, Carlyle Smith, Axel Cleeremans, Experience-dependent changes in cerebral activation during human REM sleepNature Neuroscience. ,vol. 3, pp. 831- 836 ,(2000) , 10.1038/77744