Table 1.
List of features used for binary classification. Each column presents the name (unit) of each feature and a brief description of it. More detailed descriptions of the features can be found in Appendix A.
| Feature (Unit) | Description | Feature (Unit) | Description |
|---|---|---|---|
| stdHR (beats per minute) |
Standard deviation of heart rate | DHSM (µV) |
Degree of horizontal saccadic movement |
| mHR (beats per minute) |
Mean heart rate | DVSM (μV) |
Degree of vertical saccadic movement |
| stdRR (breaths per minute) |
Standard deviation of respiratory rate | mDHV (μV) |
Mean of DHSM and DVSM |
| mRR (breaths per minute) |
Mean respiratory rate | DSM (μV) |
Degree of saccadic movement |
| mNSC (no unit) |
Mean amplitude of normalized skin conductance response | CHV (μV2) |
Covariance of horizontal EOG and vertical EOG |
| minNSC (no unit) |
Minimum amplitude of normalized skin conductance response | CHP (μV) |
Covariance of horizontal EOG and PPG |
| NE (no unit) | The number of eye blinks | CVP (μV) |
Covariance of vertical EOG and PPG |