Brain Tracking (IMAGE) University of California - San Diego Caption Researchers used advanced brain imaging techniques to match corresponding blood vessels in left and right hemispheres of the brain and discovered that variations in their respective diameter track each other over time. Credit UC San Diego Usage Restrictions Must be used in conjunction with Neuron study. 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.