Virtual Reality (VIDEO) Harvard Medical School This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption A fly is tethered under a microscope to allow the measurement of its brain activity while it navigates. The fly walks on a foam air-cushioned ball. When the fly walks the ball rotates. To create virtual reality for the fly, the experimenters track the rotation of the ball in real-time and use the movements of the ball to update the position of visual cues that are presented around the fly. Credit Fisher et al 2019/Harvard Medical School Usage Restrictions None 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.