1. A system displaying physiological signals, such as ECG signals, which signals are reproduced at greater than real time after being recorded in real time for the observation of portions of said signals representing certain cardiac events, said system comprising: (a) means for receiving said reproduced ECG signals; (b) means for processing, entirely in analog form, said ECG signals for display in a format comprising a plurality of separate vertically displaced lines; and (c) a storage oscilloscope for displaying said processed ECG signals in said format.