That's my own experience as well. I would guess that this is how most people experience 'imagination'. Same with faces: I guess nobody can really 'see' a face

That's my own experience as well. I would guess that this is how most people experience 'imagination'. Same with faces: I guess nobody can really 'see' a face in their imagination, at least not for more than a few seconds of high-resolution short-term memory. They can, however, use their knowledge about nose shapes etc. to construct a symbolic model of the face in their mind.