Figure 4.

Examples of VB detection. Some high and sharp P waves accompanied by muscle disturbances are erroneously marked as EBs in AHA 1010d1. QRS complexes with very low amplitudes about 100 μV in an epoch of MIT-BIH 101d2 are correctly detected, with small exceptions. The recording MIT-BIH 212d2 shows transition between two types of heart activity.