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Dimension reduction of nonlinear features of the FHRV.
| Nonlinear Features | Principal Components | |
|---|---|---|
| 1 | 2 | |
| SampEn | −0.165 | 0.929 |
| SD1 | 0.774 | 0.506 |
| SD2 | 0.857 | −0.256 |
| HFD | −0.302 | 0.861 |
| VIRR | 0.873 | 0.304 |
| VIFHR | 0.860 | −0.028 |
Correlations > 0.77 highlighted in bold.
