Visual System (IMAGE) Johannes Gutenberg Universitaet Mainz Caption Visual systems need to be able to cope with dynamically changing conditions, as in this example where the visual system of the fly detects a predator in the shade. Credit ill./©: Katja Sporar, Silies group Usage Restrictions This image may only be used in connection with the press release "Fruit flies respond to rapid changes in the visual environment", issued by Johannes Gutenberg University Mainz on February 5, 2020. 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.