A deeper stage of sleep, called rapid eye movement sleep, or REM, makes up 25 percent of a human's sleep.

深度睡眠也被称为快速眼动睡眠，占人类睡眠的25%。

Well, we know that dream sleep which principally comes from a stage that we call rapid eye movement sleep or REM sleep.

嗯，我们都知道睡梦主要是由快速眼动睡眠即快速眼动造成的。

Then REM sleep emerges, rapid eye movement sleep.

然后REM睡眠出现, 快速眼动睡眠。

After that, you start the REM or " rapid eye movement" sleep stage.

之后，您开始 REM 或“快速眼动”睡眠阶段。

Rapid eye movement sleep is when your eyes move quickly from one side to the other.

快速眼动睡眠是指您的眼睛从一侧快速移动到另一侧。

Today it’s tentatively thought that rapid eye movement sleep regulates and stabilises negative emotions and memories.

今天初步认为，快动眼睡眠可以调节和稳定负面情绪和记忆。

Nightmares, Martin said, occur during rapid eye movement sleep, the phase during which our muscles relax and we dream.

马丁说，噩梦发生在快速眼动睡眠期间， 这是我们肌肉放松并做梦的阶段。

The study found that the participants experienced seasonal variations in their rapid eye movement sleep, also known as REM sleep, as well as in their slow wave sleep, also known as deep sleep.

研究发现，参与者在快速眼动睡眠（也称为 REM 睡眠）和慢波睡眠（也称为深度睡眠）中经历了季节性变化。

9 The brain is as active during REM (rapid eye movement) sleep—when most vivid dreams occur—as it is when fully awake, says Dr. Eric Nofzinger at the University of Pittsburgh.

9 匹兹堡大学的埃里克·诺夫辛格 (Eric Nofzinger) 博士表示，在快速眼动睡眠期间（最生动的梦境发生时），大脑与完全清醒时一样活跃。