So, i've had this since my childhood and i don't have any idea how it occurs aside from whenever i focus on a blank area for too long, say a computer screen or a wall, things start to get faster..? I feel like i move faster than the rest of the things, my senses seem to slow down but everything else seems to get faster and then i feel kinda dizzy, after about 5 or 10 minutes it passes by itself. My mother said that when i was a child, this occured way too often. Nowadays, it seems like it has shrank but once in a while i still get this feeling. I really want to know what this is all about. Any help would be appreciated. Thanks in advance. And sorry for my broken english, i'll try to explain further if this didn't give you any clue as to what it may be.