paradoxical sleep

American  

noun

Physiology.

1. REM sleep.

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paradoxical sleep British  

noun

1. physiol sleep that appears to be deep but that is characterized by a brain wave pattern similar to that of wakefulness, rapid eye movements, and heavier breathing

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Etymology

Origin of paradoxical sleep

First recorded in 1960–65

Example Sentences

When REM sleep was first discovered, psychologists called it “paradoxical sleep,” as the brain’s electrical activity during REM sleep looks more like the waking brain than it does like the brain during other sleep stages.

From New York Times

“How can we wake a cat during paradoxical sleep and ask it questions?”

From New York Times

He called the REM state “paradoxical sleep,” since the brain is active even though the body is virtually still.

From New York Times