Opto-Kinetic Causes Nausea (IMAGE) Monell Chemical Senses Center Caption The opto-kinetic drum spins around the subjects head at 10 rpm, causing a form of nausea similar to motion sickness. Credit Monell Center 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.