Two Days of fMRI Compared (IMAGE) Duke University Caption Brain scans showing functional MRI mapping for three tasks across two different days. Warm colors show the high consistency of activation levels across a group of people. Cool colors represent how poorly unique patterns of activity can be reliably measured in individuals. Credit Annchen Knodt, Duke University 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.