REM睡眠中の脳波は起きている時と同じ脳波であり、夢を見るステージです。の英語

The brain waves during REM sleep are the same as when awake, and it's the stage when you have dreams.

a recurring sleep state during which dreaming occurs

Slow-wave sleep is the deepest sleep and is also called non-REM sleep.

the deep sleep into which a person falls while sleeping, called sleep

accept your wakefulness and sleep in its own contrary way is more likely to come

I lay down not so much to sleep as to think.

quality of one's hearing working while one is asleep

I fall asleep easily while watching television.

Waking or sleeping, it's on my mind.

a word pronounced unconsciously while sleeping

Jet lag is more than just feeling tired - on top of that you just don't feel well.

absentminded dreaming while awake

ejaculation during sleep (usually during a dream)

I'm not really asleep, just dozing.

Drifting off to sleep again, the same dream returned, three times in all.

sudden and unexpected death of an apparently healthy infant during sleep

feeling of uneasiness and restlessness in the legs after going to bed (sometimes causing insomnia)

a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur

the act of dreaming while asleep

People sometimes compare death to sleep.

People sometimes compare death to sleep.

We need it when asleep as well as when awake.

Normal sleep is made up of two phases.

Even I start feeling tired when I see cats sleeping.

I had a dream while sleeping.

Those headaches only happen when I'm sleeping.

to find it difficult to fall asleep after missing one's normal sleeping time

Even though I'm awake, my head is still sleeping.

a state of being half-conscious and half-asleep

fall into [come out of] a trance