....dreams where there isn't any imagery to speak of? Like just inner dialogue, but no discernible setting or characters.

I know some computer types will be familiar with the infamous "programming dream." For awhile I was scripting a mod for a game on my computer, and I would have dreams where I was just looking at black and saying "Frame, underscore, set on one, enter. Should I turn off the actor too, or just the frame? Act, underscore, set state one. Wait, is one the off setting, or is it zero?" etc

I wonder because I had a lucid one of these last night. I was very definitely dreaming, but all I could do was talk to someone else in my head.