Research in HRL is mainly focused on electrocardiographic imaging (ECGI). Topics include modeling the electrical activity of the heart; obtaining a mathematical model that relates this electrical activity to body surface potential (BSP) distributions by solving the bioelectric field problem in the torso (forward problem of ECG); estimating electrical potentials on the heart surface from the BSP measurements (inverse problem of ECG). Research is mainly on theory and computation of forward and inverse ECG problems, therefore the laboratory includes computers with powerful computational capabilities and the necessary software.