Where Do We Sign Up? Medical Studies Involving Tetris

It appears that amnesiacs in a study who played Tetris saw thecomputer game's distinctive falling pieces in their mind's eye as they fell asleep. This despite the fact that, as amnesiacs, they couldn't remember playing the game earlier in the day, according to an article in the latest issue of Science.

Probably most people who play the addictive game end up still trying to mentally spin the many-colored geometric shapes as they imagine them falling faster and faster. But scientists are trying to figure out how this happens to people who have no memory of even playing. They think it might have something to do with where various bits of information are physically stored in the human brain. Maybe, but why discount one obvious possibility--damn good programming?