This reflexive adjustment is totally absent during NREMsleep.
在非快速眼动睡眠期,完全没有这种反射性的调整。
2
During the day, your brain is a beehive of activity—during NREMsleep, it is barely humming.
在白天,你的大脑就像一个活跃的蜂窝——在非快速眼动睡眠期间,它就几乎没有嗡嗡声了。
3
This occurs because during NREMsleep the automatic, metabolic system has exclusive control over breathing and the body uses less oxygen and produces less carbon dioxide.