locust odor test (IMAGE) Washington University in St. Louis Caption Barani Raman and his lab at the McKelvey School of Engineering studied the behavior of locusts and how the neurons in their brains responded to appealing and unappealing odors to learn more about how the brain encodes for preferences and how it learns. Credit Photo: Raman lab, Washington University in St. Louis Usage Restrictions For editorial purposes License Original 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.