Table 2 Features extracted from physiological signals
Feature index | Notation of the extracted features |
|---|---|
No. 1-448 EEG time and frequency-domain features (14 feature types × 32 channels) | Mean, Var, peak-to-peak amplitude, Skewness, Kurtosis |
| Â | Average PSD in theta (4-7 Hz), alpha (8-15 Hz),beta (16-31 Hz), gamma (32-45 Hz), beta/theta, beta/alpha |
| Â | Three Hjorth parameters: mobility, activity and complexity |
No. 449-504 EEG hemispheric asymmetry (4 feature types Ă— 14 channel pairs) | Difference of average PSD in theta, alpha, beta and gamma bands for 14 channel pairs between right and left scalp |
No. 505-600 EEG nonlinear features (3 feature types × 32 channels) | Spectral Entropy, Shannon Entropy and C0 complexity |
No. 601-608 EOG features (4 feature types × 2 channels) | Mean, Var, peak-to-peak amplitude, Energy |
No. 609-642 EMG features (17 feature types × 2 channels) | Mean, Var, Total spectral power |
| Â | 1Diff-Mean, 1Diff-Median, 1Diff-Min, 1Diff-Var, 1Diff-Max, 1Diff-MinRatio, 1Diff-MaxRatio |
| Â | 2Diff-Mean, 2Diff-Median, 2Diff-Min, 2Diff-Var, 2Diff-Max, 2Diff-MinRatio, 2Diff-MaxRatio |
No. 643-646 TMP features (4 feature types × 1 channel) | Mean, 1Diff-Mean, Spectral power in the bands (0-0.1 Hz) and (0.1-0.2 Hz) |
No. 647-666 BVP features (20 feature types × 1 channel) | Hr-Mean, Hr-Var, Hr-Range |
| Â | Hrv-Mean, Hrv-Var, Hrv-Min, Hrv-Max, Hrv-Range, Hrv-pNN50 |
| Â | HrvDistr-Mean, HrvDistr-Median, HrvDistr-Var, HrvDistr-Min, HrvDistr-Max, HrvDistr-Range, HrvDistr-Triind |
| Â | PSD in bands (0-0.2 Hz), (0.2-0.4 Hz), (0.4-0.6 Hz), and (0.6-0.8 Hz) of Hrv |
No. 667-721 RSP features (55 feature types × 1 channel) | Mean, Var, Range, MaxRatio |
| Â | 1Diff-Mean, 1Diff-Median, 1Diff-Var, 1Diff-Range, 1Diff-MaxRatio |
| Â | 2Diff-Mean, 2Diff-Median, 2Diff-Var, 2Diff-Range, 2Diff-MaxRatio |
| Â | RSPPulse-Mean, RSPPulse-Var, RSPPulse-Range, RSPPulse-MaxRatio |
| Â | RSPPulse-1Diff-Mean, RSPPulse-1Diff-Median, RSPPulse-1Diff-Var, RSPPulse-1Diff-Min, RSPPulse-1Diff-Max, RSPPulse-1Diff-Range, RSPPulse-1Diff-MaxRatio |
| Â | RSPPulse-2Diff-Mean, RSPPulse-2Diff-Median, RSPPulse-2Diff-Var, RSPPulse-2Diff-Min, RSPPulse-2Diff-Max, RSPPulse-2Diff-Range, RSPPulse-2Diff-MaxRatio |
| Â | RSPAmpl-Mean, RSPAmpl-Var, RSPAmpl-Range, RSPAmpl-MaxRatio |
| Â | RSPAmpl-1Diff-Mean, RSPAmpl-1Diff-Median, RSPAmpl-1Diff-Var, RSPAmpl-1Diff-Min, RSPAmpl-1Diff-Max, RSPAmpl-1Diff-Range, RSPAmpl-1Diff-MaxRatio |
| Â | RSPAmpl-2Diff-Mean, RSPAmpl-2Diff-Median, RSPAmpl-2Diff-Var, RSPAmpl-2Diff-Min, RSPAmpl-2Diff-Max, RSPAmpl-2Diff-Range, RSPAmpl-2Diff-MaxRatio |
| Â | PSD in the bands (0-0.1 Hz), (0.1-0.2 Hz), (0.2-0.3 Hz), and (0.3-0.4 Hz), Ratio of PSD in the band (0-0.25 Hz) to PSD in the band (0.25-0.45 Hz) |
No. 722-742 GSR features (21 feature types Ă— 1 channel) | Rising time, Decay time |
| Â | Sc-Mean, Sc-Median, Sc-Var, Sc-MinRatio, Sc-MaxRatio |
| Â | Sc-1Diff-Mean, Sc-1Diff-Median, Sc-1Diff-Var, Sc-1Diff-Min, Sc-1Diff-Max, Sc-1Diff-MinRatio, Sc-1Diff-MaxRatio |
| Â | Sc-2Diff-Mean, Sc-2Diff-Median, Sc-2Diff-Var, Sc-2Diff-Min, Sc-2Diff-Max, Sc-2Diff-MinRatio, Sc-2Diff-MaxRatio |