[spiralx]

That's really interesting, thanks. And sure, a significant amount of remembered imagery is undoubtedly reconstruction and interpolation, but when I try and imagine a bicycle all I get is those partial memories of bicycles that flicker in an out of my mind's eye intermittently, there isn't really any reconstruction or interpolation that produces stable imagery. My visual memory is fine (although the inattention and working memory deficits of ADHD in itself may affect how much detail is committed) - I recognise what things are and things I've seen before - it's my mind's eye and the ability to envision that's lacking. And without being able to envision you can't really imagine visually.