最后，对呼吸道刺激物的咳嗽反射不会导致人们在睡眠期咳嗽，而会造成呼吸暂停。
Finally, the coughing reflex in reaction to irritants in the airway produces not a cough during sleep but a cessation of breathing.
在非快速眼动睡眠期，完全没有这种反射性的调整。
This reflexive adjustment is totally absent during NREM sleep.
许多研究发现，一种被称为条件反射的基本学习形式可以在睡眠中发生。
Many studies have found that a basic form of learning called conditioning can happen during sleep.
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