Table 2.
List of functions applied on physiological signals for preliminary statistical analysis.
| Feature Type | Physiological Signal | Statistical function |
|---|---|---|
|
| ||
| Accelerometry (ACC), Electrodermal Activity (EDA), Skin temperature (TEMP), Heart rate (HR) |
Minimum | |
| Time-Domain | Maximum | |
| Mean | ||
| Median | ||
| Standard Deviation | ||
| Skewness | ||
| Kurtosis | ||
| Inter-quartile-range | ||
|
| ||
| MeanNN | ||
| Time-Domain | Interbeat interval (IBI) | SDNN |
| RMSSD | ||
| SDSD | ||
| NN50 | ||
| pNN50 | ||
|
| ||
| Dominant frequency | ||
| Frequency-Domain | ACC | Spectral Entropy |
| Spectral Energy | ||
| Minimum | ||
| Maximum | ||
| Mean | ||
| Standard Deviation | ||
|
| ||
| VLF | ||
| Frequency-Domain | IBI | LF |
| HF | ||
| ’LF/HF ratio’ | ||
| LF (nu) | ||
| HF (nu)’ | ||