REM and NREM stage 2 sleep seem to help consolidate new procedural memories, which involve learning a new skill or task until it can be performed automatically.

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Research has shown that both REM and NREM stage 2 sleep play a role in consolidating new procedural memories. During REM sleep, the brain replays recently learned skills, while in NREM stage 2 sleep, the brain strengthens the connections between neurons involved in the skill.

REM and NREM Stage 2 Sleep Seem to Help Consolidate