Gabor (IMAGE) University of Rochester Caption This is an animation illustrating the difference between 38 percent contrast and 60 percent contrast -- the approximate difference perceived by non-action gamers and action gamers. Credit University of Rochester 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.