Figure 6
From: Synthetic photoplethysmogram generation using two Gaussian functions
Motion trajectory of a single synthesized PPG waveform. The simulated PPG waveform is based on an excellent PPG template (associated model parameters are shown in Table 1). The blue curve represents the first Gaussian, which corresponds to the systolic wave, and the red curve represents the second Gaussian, which corresponds to the diastolic wave. (a) Synthesized PPG waveform trajectory of one heartbeat in 3-D space, and the dotted part is the unit cycle. (b) Changes to the value of \(x\) in one period. (c) Changes to the value of \(y\) in one period. (d) Changes to the value of \(\theta\) in one period. (e) Changes to the value of \(z\) in one period. This figure shows how the model generates a systolic wave followed by a diastolic wave using two Gaussian functions.
