Figure 1.

Navigation in real and virtual environments. Monkeys foraging in real-world environments (A) moved freely around two visually distinct rooms while being followed by the experimenter. Random locations around the room were continuously baited with food reward by another experimenter. Monkeys foraging in a virtual environment (B) were seated in front of a wraparound display with access to a joystick (inset) and required to find and collide with large red boxes (visible on center screen) to receive a juice reward. See Movie 1 and Movie 2.