Figure 4

The results of the analysis of the coherence function C(f) for the HRV and PPGV signals in the LF and HF bands. C(f) is shown with solid line for patients D (a) and E (b). The 95% confidence interval is shown with dashed line.

The results of the analysis of the coherence function C(f) for the HRV and PPGV signals in the LF and HF bands. C(f) is shown with solid line for patients D (a) and E (b). The 95% confidence interval is shown with dashed line.