Ganglion Cell Layer of the Retina (IMAGE) Duke University Caption The ganglion cell layer of the retina is labelled with red to show the presence of a cell sensitive to motion in the upward direction. In low light, these cells become generalists to help the retina pick up the faintest signals of any kind of motion. Credit Xiaoyang Yao, Duke University and Amanda J. McLaughlin at the University of Victoria Usage Restrictions Please credit Xiaoyang Yao, Duke University and Amanda J. McLaughlin at the University of Victoria 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.