My dear, you have shamed me. - no, scratch that, you have suggested to me a much better angle from which to view this phenomenon when it happens to me! Thank you! It has always been such an ever-so-slight negative experience for me (a little bit like dreams in which I can't see the action, because somehow my dream self is viewing everything from behind half-lowered eyelids; something I used to deal with all the time as a young dreamer.) And here you are, rejoicing in that motion, making something good of it! Thank you! I'll definitely let you know how it goes with me the next time Brownian Motion Syndrome hits.