Optogenetic Exposure (IMAGE) Cell Press Caption This image shows a male fly being exposed to red light to trigger optogenetic activation of CRZ neurons, which causes ejaculation. Credit Avi Jacob, BIU Microscopy unit Usage Restrictions Credit Required 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.