Pinpointing the Brain's Arbitrator (image) California Institute of Technology Caption Caltech researchers used a combination of computational modeling and behavioral and fMRI data to pick apart the roles of various brain regions involved in a type of behavioral control. The circles (some bearing coins) and shaded squares relate to a decision-making task given to subjects in the study. Credit Caltech/Sang Wan Lee/Neuron/Elsevier Usage Restrictions None 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.