I've been on a kick of analyzing how various characters' powers work, and after mass-googling I still wasn't able to find theories regarding the Flash (plenty on Superman though) - so I decided to get opinions here.
I accept/understand that The Flash can also perceive things at high speeds. This would lead us to believe that when Flash moves at super speeds people & things around him appear to be moving much slower than normal -- while they would perceive themselves at normal speed & Flash at super speeds. This is pretty much the chosen effect whenever a fictional character is undergoing movement at super speed. I haven't read any of Flash's own books (outside specials) but I have seen this model used before.
If this is the accepted "way" speed works, my question is regarding how any Flash (or really anyone who has super speed & perceptions) perceives himself moving. I read a summary of Flash (v2) #30 where Wally 'snapped' into super-speed mode when he was about to be hit by a sniper's bullet in a movie theater & walked around to grab the other bullets. This is simple enough, and pretty cool to imagine (taking a few moments and stopping a whole volley of bullets).
However, it is when he is traveling that this question really makes me scratch my head. If he runs across town or even across country, does he see himself as running "normal" speed and having it take as long as it would to do in real life? His perceptions would have to be heightened to some degree (if not having to be maximum) so he could recognize obstacles in his running path and make the appropriate course correction. Depending on what roads he was running on (in my cross country example), he could probably run at speed one could safely drive in a car (that is, he is actually moving so fast everyone slows down, but he feels as if he's moving as fast a car -- where one could still react fast enough in turning and avoiding things) , but that would still be an extremely long trip (coast to coast) in his perception. I can't speak for everyone, but I would imagine so much time between being alerted of a problem to arriving on scene would eventually be maddening (let's say he's on the east coast of the US and the rest of the JLA calls him to come help on the west coast - he's thinking about it the length of a long car trip).
The one theory I came across was that his memory is much more short-term when in a state of super-speed, so that he is always "running in the now" and trips never seem to have lasted that long (say, 15 minutes). This person based this on a time it was shown that Wally could read and learn information at super speed, but not retain it for long after that (I have no idea when or in what comic this was said....or not said). This sounds like a good explanation, but seems like it only explains this issue for the Flash (unless it's not just for the Speed Force, and rather a "universal super-power rule" that super-thinking (perceptions, learning, etc) doesn't automatically include super-retention). Granted, maybe because most of the other super-speedy characters fly above most obstacles, they wouldn't need everything around them slowed down as much.
Does anyone find this theory applicable? Or have another, more solid theory?