💤 "The brain never truly rests. Even in deep sleep, parts of it remain awake, processing, creating, and dreaming."
Dreams can happen in any sleep stage, not just REM [citation:3][citation:6]. In non-REM sleep, brain activity resembles wakefulness, as if the mind is "partially awake" [citation:3][citation:6]. About half of people woken from deep sleep report a "sense of presence" without a clear dream [citation:2]. The more vivid the dream, the deeper the sleep feels [citation:2]. Dreams help process emotions, organize memories, and even boost creativity [citation:4][citation:5]. We dream in pictures, and most dreams relate to recent awake experiences [citation:1]. Scientists are now using AI to detect dreams from brain activity alone [citation:3][citation:6].
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52 mins