Thirsty work: where’s the water? (Image: Courtesy of David Tank, Princeton University)
IT’S decision time. The mouse has scurried down the 3-metre-long corridor, and now faces a T-junction. It knows from experience that a reward of refreshing water lies at the end of one path. The other route leads to nothing. The mouse makes its choice and hurries off to the left.
Or so it thinks. In reality, the rodent is running on the spot, navigating a computer-generated world projected onto the inside of a spherical surface that fills…
