deep sleep

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Though we often think of anesthesia as putting us in a deep sleep, new research suggests it could actually be closer to being in a coma than previously thought.

From The Wall Street Journal • Jun. 5, 2026

The anesthetized patients’ brains produced activity that shared similarities to being unconscious in a coma—as well as deep sleep, REM sleep and patterns unique to anesthesia.

From The Wall Street Journal • Jun. 3, 2026

REM sleep involves intense dreaming and brain activity that resembles wakefulness, yet people often report that this stage still feels like deep sleep.

From Science Daily • Mar. 26, 2026

Both deep sleep and REM sleep were significantly shorter, and participants spent an additional 15 minutes awake during the night.

From Science Daily • Feb. 4, 2026

I awoke from a deep sleep to the sound of harsh laughter and pounding feet in the alley below me.

From "The Name of the Wind" by Patrick Rothfuss