http://news.yahoo.com/s/space/20051222/sc_space/scientistspredictwhatyoullthinkofnext
To recall memories, your brain travels back in time via the ultimate Google search, according to a new study in which scientists found they can monitor the activity and actually predict what you'll think of next.
The work bolsters the validity of a longstanding hypothesis that the human brain takes itself back to the state it was in when a memory was first formed.
The psychologist Endel Tulving dubbed this process "mental time travel."