Fig. 2From: Particularities of data mining in medicine: lessons learned from patient medical time series data analysisSection of an electrocardiogram. The P wave on an electrocardiogram represents atrial depolarization (which results in atrial systole), T wave represents the repolarization of the ventricles and QRS complex is the combination of graphical deflections occurring on a typical electrocardiogram between P and T waves. Taken from http://perarduaadastra.eu/2010/01/el-electrocardiograma-ese-garabato-con-picos-y-curvas/Back to article page