Experiment 2 Environments (IMAGE) University of Pennsylvania Caption For the second experiment, subjects were tested in two nearly identical virtual-reality arenas, one with a circular boundary wall, the other with no wall but a large circle drawn on the ground. This image shows the two arenas, containing two example target objects. Credit University of Pennsylvania Usage Restrictions Must credit the university License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.