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3 Fundamentals of the Formation of Biosignals

Fig. 3.17: Excitation of the heart muscles over one heartbeat in eight steps (A to H) with labelling of

the individual sections (top); associated ECG with assigned waves (bottom)

thigh) via this node and the adjoining His bundle. This section can be seen as a Q

wave in the ECG.

Section D: At the end of the wall between the left and right main chambers, the excit-

ation can travel further into the outer wall of the main chambers via the Purkinje-

fibres, which generates the central R-wave in the ECG.