alt Hacker NewsI've also had this kind of topological knowingness which I couldn't name. Another comment here says "schematic conceptual" which captures what it feels like for me.
Another good explanation here is that it's all taking place but that last step of creating the visual is suppressed (as intended) while conscious as that would be hallucinating.
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I feel that I could visualize internally but there's a curtain pulled over the visualization part of it. It's there, i feel it but it's blocked from my sight somehow. I've built intuitive ways to probe the imagination so I technically experience my image-less visualization. However, when I attempt to visualize something more complex (there are a lot of elements or minutiae) I'm reaching my intuitive limits. When it comes to auditory imagination, I can literally listen to a song from my own head all day long with no effort.
I sometimes called it "textual memory of an image", but I also liked TFA with "we experience these as an awareness of a set of spatial facts"