Mutual inhibition (IMAGE) Picower Institute at MIT Caption When AIA detects a food odor, it feeds that information into a mutually inhibiting loop between NSM and neurons expressing MOD-1 and PDF. If the worm is eating, NSM prevails and enforces a dwelling state. If the worm is not, it roams to find the source of the food odor. Credit Flavell Lab/MIT PIcower Institute Usage Restrictions with credit 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.