No monologue, no images, no sound. Just... concepts. It's a bit weird.
Even weirder is that I can actually conjure images while asleep (or about to sleep, or barely just woke up).
I loved books as a kid, but never understood why people preferred them to movies where you could actually picture what is happening on the page. It took me until my mid 20s to figure out my experience was different to other people's.
I can get lost in my imagination, it's just not visual or auditory