Binocular Rivalry Instrument (IMAGE) Vanderbilt University Caption Professor Randolph Blake looks through the device he uses to study binocular rivalry. It uses a series of mirrors and lenses to present different images to each eye. Credit Neil Brake, Vanderbilt 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.