Salk Institute -- Jin Lab -- Organization (IMAGE) Salk Institute Caption A long-term debate in behavioral neuroscience is whether behavior is organized in a hierarchy or as a chain. This diagram shows how a sequence of left (L) and right (R) actions performed by mice in the current study would be organized under each theory. Credit Salk Institute Usage Restrictions with credit and related coverage. 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.