How the Brain Moves From Waking Life to Sleep (and Back Again) | Quanta Magazine

Transition from Waking Life to Sleep

Neuroscientists are studying the boundary between sleep and awareness, discovering various liminal states that help explain sleep disorders resulting from disrupted sleep transitions.

As one prepares for sleep, their brain starts to transition, and their perception of reality changes. For instance, a person might imagine a cat sniffing at cheese, even if they don't own a cat and are nowhere near a lake.

The journey into sleep is a cryptic state that most animals need to survive, refreshing the brain and body by repairing tissues, clearing out toxins, and solidifying memories.

Understanding these transitions can provide insights into sleep disorders that occur when the process goes wrong.

Author's summary: Exploring the brain's transition from wakefulness to sleep.

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Quanta Magazine Quanta Magazine — 2025-10-17

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