Periodic Table of the Brain (IMAGE) Allen Institute Caption Allen Institute scientists are working to build a 'periodic table' of cell types in the brain. In this study, researchers carefully analyzed hundreds of cells in the mouse brain and classified them based on their shape and electrical activity. Credit Allen Institute Usage Restrictions None 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.