A Subsystem of Smell (image) Brown University Caption Experiments in mice suggest neurons that detect odors associated with an instinctive response -- like fleeing when an approaching predator is detected -- are configured differently than other olfactory neurons. Further research could determine whether this system automatically triggers flight or other primal behaviors. Credit Mike Cohea/Brown University Usage Restrictions Credit required 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.