Kanizsa Triangle (IMAGE) Carnegie Mellon University Caption Carnegie Mellon neuroscientists believe that neuronal feedback could explain why we see optical illusions, like the Kanizsa triangle. Credit Carnegie Mellon University 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.