When you imagine things, do you picture them?
If someone describes an image well enough, I can usually picture it. This tends to happen mostly when I'm reading though, , (it happens a lot when reading revilations, for instance.) It can also happen if I'm reading a very detailed legal document/brief, if the document is written with enough detail, I can usually picture certain things, (this especially happens with transcripts.) If you've ever gotten the feeling like you're reading a movie script, and you can just imagine being there while everything's happening, that's what it's like.
Just a bit of a side note, I'll be reaching the end of my prepared questions tomorrow night. I have a post planned for the next day, after that I really don't have any plans.