I've had unique experiences in the past three months with dissociative states, and also something I didn't know existed "closed-eye hallucinations" or closed-eye visualizations.
Described out of body/dissociative, I find it very unpleasant and usually doesn't last more than 10 seconds. Feeling what appears to be looking down from the ceiling has become a terrifying experience.
And for the "CEVs," it's patterns, shapes, letters/symbols maybe I don't know. If I concentrate and change the colors and patterns or said colors and patterns automatically change and rotate, speed also changes. I focus more while laying down and eyes closed, still feeling my back, side, or stomach on the bed and not asleep. I can "sit up" and very faintly see the colorful outsides of some items in the bedroom, bathroom, move down the hallway, nothing past that point. Everything is too black to make out an outline.
I've never been into "this," never researched it, in good health, I'm on no medications and drugs. It's sparked curiosity, and even lucid dreams are becoming more frequent.