C X DREAM

 A

1. Sleep temporarily dissolves ordinary consciousness
   During deep non-REM sleep, the brain enters slow-wave activity associated with little or no conscious experience. The article describes this as a temporary “annihilation” of subjective awareness — a nightly disappearance of the sense of self.

2. Dreaming creates consciousness without external reality
   In REM sleep, the brain becomes highly active again, especially in sensory and emotional regions. Dreams are internally generated experiences that feel real despite being disconnected from the outside world.

3. Ordinary dreams lack self-awareness
   Most dreams do not include metacognition — awareness that one is aware. In dreams, people usually experience events directly without questioning them, meaning consciousness can exist without reflective self-awareness or agency.

4. Lucid dreaming restores part of the observing self
   In lucid dreams, certain brain regions tied to self-reflection and metacognition reactivate. The dreamer realizes they are dreaming while still inside the dream, showing how awareness of awareness can emerge separately from basic experience.

5. Dreams help illuminate the nature of consciousness
   Using ideas from Thomas Nagel, the article argues that dreaming offers a rare way to study “what it is like to be.” By observing consciousness disappear and reappear during sleep, researchers gain insight into the fundamental structure of subjective experience.