Electrocardiographic Body Surface Isochrone Maps with Threshold Potential – Variability in Young Healthy Men

Body surface isochrone maps with a threshold potential of 0.05 mV were constructed and analysed in 15 healthy young men. These maps are capable of displaying the activation sequence of the heart on the surface of the body. The activation was found to start always on the anterior chest surface and mainly in its upper half. It ended prevailingly on the back chest and mainly in its upper half. The spread of activation (activation sequence) can be regarded as counter-clockwise, covering most of the chest surface area.