Figure 4From: Spatiotemporal representation of cardiac vectorcardiogram (VCG) signals Dynamic VCG representation plot of a patient with bundle branch block. The 3D VCG trajectory is color coded with the potential variation rate listed in the right side. Two curly R peaks designated as “M waves” are shown in the QRS loop. The ‘M’ wave pattern shows that both ventricles are not depolarized simultaneously (see animation video in Additional file 3).Back to article page