A three-dimensional apparatus is disclosed that provides a view of the electrical pathway of the heart as it pertains to a corresponding electrocardiogram tracing on an external heart monitoring device. Also provided is a method of simulating propagation of electrical signals in the heart. The heart...http://www.google.com/patents/US5482472?utm_source=gb-gplus-sharePatent US5482472 - Electrical signal generator interface with three-dimensional electrical pathway and transparent heart and method of visually simulating cardiac waveforms in three dimensions
