Bend-And-Roll Behavior (VIDEO) The Zuckerman Institute at Columbia University 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 fruit fly performs the bend-and-roll escape behavioral sequence. In this study, scientists identified a class of nerve cells, called down-and-back neurons, that initiate this behavior in response to dangerous stimuli. Credit Anita Burgos/Grueber Lab/Columbia's Zuckerman Institute Usage Restrictions Please contact Zuckerman Institute for reprint permissions. 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.