That's a very good explanation.

I believe mine has changed over the years, possibly from underuse, but the struggle to hold onto images is real. I can create an image in my head and it can be rather detailed even... but if it's more than a single item, I can't hold details well for more than a part of it at a time.... like having tunnel vision almost. Whatever im focusing on only... and it takes increasing focus to hold it and not lose it.