worm and equation (IMAGE) Nagoya City University Caption The response to the first smell (blue line in upper panel) comprises of both fast (red line; the second derivative of odor concentration) and slow (yellow line; the first derivative) components. In contrast, the response after exposure-experience (lower panel) only consists of slow components, leading to more efficient movement away from the odor. Credit © The Kimura lab @ Nagoya City University Usage Restrictions None 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.