Image of iHEART Project (IMAGE) Politecnico di Milano Caption Evolution of transmembrane potential in atria (top) and ventricles (bottom) at different phases of the heartbeat. Credit (Credit: R.Piersanti, Politecnico di Milano) 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.