这意味着，睡眠时间不足7-8小时的成年人形成牢固记忆的能力受到严重影响，因为他们无法保障充分的快速眼动睡眠时间。
Although REM sleep is not classified as a type of deep sleep, it is only reached after the brain has passed through deep sleep stages.
尽管快速眼动睡眠并不属于深度睡眠的范畴，但只有在经过深度睡眠后，大脑才能进入快速眼动睡眠状态。
For the most recent study, participants were shown groups of three words – such as “cookie”, “heart” and “sixteen” – and asked to find another word that can be associated with all three words.
在最新研究中，研究人员向参与者展示三个单词——譬如“cookie（曲奇）”、“heart（爱心）”以及“sixteen(16)”，同时他们需要找到与这三个词语相关的一个词。
资料图 做梦竟能增强记忆力
In this example, the answer would have been "sweet”.
在这个例子中，正确答案应该是“sweet（甜蜜）”这个词。
Participants were tested once in the morning and then given the same task again in the afternoon. In between, some were allowed a nap with REM sleep, some a nap without REM sleep, while the others had a quiet rest period.
参与者在早上和下午各进行了同样的测试。而在两次测试的中间，一些人进行了短暂的快速眼动睡眠；一些人虽然小睡但并未进入快速眼动睡眠状态；还有一部分人只是安静地休息了一会儿。