Table 1. Eight features in region A (before normalization): 0~5 sec window.
Channel 1 | Channel 2 | Channel 3 | Channel 4 | |||||
---|---|---|---|---|---|---|---|---|
Feature | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert |
M | 2.3E-05 | −6.7E-06 | 4.7E-05 | −1.8E-04 | 5.2E-04 | −6.0E-04 | 2.7E-04 | −5.4E-04 |
P | 1.9E-04 | 1.4E-04 | 1.1E-04 | −1.4E-04 | 5.9E-04 | −5.2E-04 | 3.3E-04 | −4.8E-04 |
SoP | 2.3E-05 | 0.0E + 00 | 4.7E-05 | 7.6E-06 | 5.2E-04 | −2.1E-05 | 2.7E-04 | −8.2E-06 |
NoP | 1 | 0 | 24 | 3 | 79 | 30 | 63 | 16 |
M* | −4.0E-06 | −5.9E-07 | −9.7E-05 | 2.0E-04 | 1.4E-04 | −9.2E-05 | −4.7E-05 | 6.9E-05 |
skew | −1.3E-02 | 1.2E-02 | −1.8E-02 | −5.1E-02 | 3.2E-02 | 4.0E-02 | −3.5E-02 | 5.7E-02 |
kurt | 2.1E + 00 | 2.1E + 00 | 2.1E + 00 | 2.1E + 00 | 2.1E + 00 | 2.1E + 00 | 2.1E + 00 | 2.1E + 00 |
SS | 1.0E-07 | 2.4E-07 | −2.8E-08 | −2.6E-08 | 2.2E-09 | −2.1E-08 | 1.5E-09 | −2.0E-10 |
f | 5.2E-04 | 0.0E + 00 | 1.2E-02 | 4.7E-03 | 4.1E-02 | 4.7E-02 | 3.3E-02 | 2.5E-02 |
Channel 5 | Channel 6 | Channel 7 | Channel 8 | |||||
Feat. | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert |
M | 4.2E-04 | −5.0E-04 | 7.9E-05 | 4.4E-05 | 1.4E-03 | −1.9E-03 | 3.7E-04 | −5.4E-04 |
P | 4.8E-04 | −4.3E-04 | −1.9E-05 | 9.3E-05 | 1.5E-03 | −1.8E-03 | −2.8E-04 | 6.3E-04 |
SoP | 4.2E-04 | 0.0E + 00 | −7.9E-05 | 0.0E + 00 | 1.4E-03 | −5.2E-04 | −3.7E-04 | 0.0E + 00 |
NoP | 48 | 0 | 0 | 0 | 56 | 26 | 0 | 0 |
M* | 4.1E-05 | −2.8E-05 | −8.0E-05 | 1.4E-04 | 5.9E-05 | −1.2E-04 | −1.4E-04 | 2.3E-04 |
skew | 2.5E-02 | 2.8E-03 | −1.5E-01 | −6.5E-02 | 8.7E-03 | 1.4E-02 | −3.2E-02 | 2.9E-02 |
kurt | 2.1E + 00 | 2.1E + 00 | 2.2E + 00 | 2.2E + 00 | 2.1E + 00 | 2.1E + 00 | 2.1E + 00 | 2.2E + 00 |
SS | 2.4E-10 | 6.4E-10 | 9.3E-11 | 2.9E-11 | 4.2E-12 | −3.3E-12 | −1.2E-12 | 6.1E-12 |
f | 2.0E-02 | 0.0E + 00 | 0.0E + 00 | 0.0E + 00 | 3.0E-02 | 5.6E-02 | 0.0E + 00 | 0.0E + 00 |
Note: All values are computed from ∆HbO, whereas M* is computed from ∆HbR.