SMRTR Science & EngineeringAug 10, 2026Nautilus

When Dreaming Gets Your Heart Moving

SMRTR summary

During REM sleep, the brain prioritizes internal heartbeat signals over external sounds, even more than when awake. Swiss researchers believe this inward focus drives vivid, emotional dreams while still allowing wake-up responses to emergencies.

SMRTR provides this summary for quick context. The original article belongs to Nautilus.

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