Fig. 3
From: Effect of simultaneous physical and auditory stressors on cardiorespiratory response
Exemplary illustration of the processing steps from the raw ECG signal to the heart rate variation of a 2nd channel to Einthoven of a single subject. (a) Illustrates a raw signal sequence of the ECG-signal. (b) The signal as processed by a wavelet filter, in which the R peaks are determined and highlighted by the red circle markers. (c) Visualisation of the heart rate variability as the variations of the interbeat intervals (IBIs), which are indicated in (b) by the red arrows.
