From Cellular Electrophysiology to Electrocardiography -- The Forward Problem of Electrocardiography: Theoretical Underpinnings and Applications -- Whole Heart Modeling and Computer Simulation -- Heart Surface Electrocardiographic Inverse Solutions -- Three-Dimensional Electrocardiographic Tomographic Imaging -- Body Surface Laplacian Mapping of Bioelectric Sources -- Neuromagnetic Source Reconstruction and Inverse Modeling -- Multimodal Imaging from Neuroelectromagnetic and Functional Magnetic Resonance Recordings -- The Electrical Conductivity of Living Tissue: A Parameter in the Bioelectrical Inverse Problem.Over the past several decades, much progress has been made in understanding the mechanisms of electrical activity in biological tissues and systems, and for developing non-invasive functional imaging technologies to aid clinical diagnosis of dysfunction in the human body. The book will provide full basic coverage of the fundamentals of modeling of electrical activity in various human organs, such as heart and brain. It will include details of bioelectromagnetic measurements and source imaging technologies, as well as biomedical applications. The book will review the latest trends in the field and comment on the future direction in this fast developing line of research.