Fascinating! Since falling asleep is arguably a bodily process as well, I wonder if you also have observations about the bodily sensations during the stages? Or do you try to be exclusively aware of the visuals and try to not to be aware of the body?
I try to maintain my concentration on what I see, and so deliberately don’t pay attention to other sensations.
I haven’t experimented much with the other senses in this way. I wonder if you could get similar results by concentrating on bodily sensations (or some other sense) that I’ve gotten by concentrating on the visual. Seems like it’d be a good avenue for experimentation.