Sleep & Memory Consolidation

Night scenario

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Right now

Time into night

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Stage

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Declarative memory

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Procedural/emotional

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Morning comparison

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Declarative memory (consolidated in N3 / slow-wave sleep) Procedural / emotional memory (consolidated in REM) Other scenario (reference)

Sleep runs on ~90 min cycles: early cycles are rich in deep slow-wave sleep (N3), later cycles are rich in REM. Waking early cuts off the REM-heavy cycles first.

Hypnogram — sleep stage across the night

Memory strength — declarative vs procedural/emotional