Predreaming

I've noticed a kind of cool phenomenon just as I'm falling asleep. While I lie in bed waiting for sleep to overcome me, I tend to think about various things in a deliberate manner (i.e. they aren't just random thoughts that occur to me). Just before I fall asleep, my brain starts providing its own visual images to go with these thoughts. But the images don't match at all, they're just random things culled from my recent experience. So the words my brain is thinking end up superimposed over a picture I saw in the newspaper or that weird and complex table in my latest translation that I'm going to have to figure out how to edit on Monday or the layout of the last website I was looking at. This isn't lucid dreaming because I'm awake, and I do have full control over my thoughts, just not the images. It's like a powerpoint slideshow or a youtube fan tribute gone amok.