Brain Scanning During Ancient Tool Making (IMAGE) Indiana University Caption A volunteer creates an ancient Acheulean hand axe wearing a cap designed to measure brain activity. Credit Shelby S. Putt Usage Restrictions Credit author 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.