tDCS System (IMAGE) University of Pennsylvania Caption Researchers place the electrodes of this tDCS system so that the current passes through the area of the brain being studied. Credit Abigail Graham, University of Pennsylvania Usage Restrictions With credit. 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.