Table 3. Eight features in region A (before normalization): 0~15 sec window.
Channel 1 | Channel 2 | Channel 3 | Channel 4 | |||||
---|---|---|---|---|---|---|---|---|
| ||||||||
Feature | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert |
M | 2.4E-05 | −6.0E-06 | 4.6E-05 | −1.4E-04 | 5.0E-04 | −5.5E-03 | 2.5E-04 | −5.4E-04 |
P | 3.6E-04 | 2.8E-04 | 1.9E-04 | −6.1E-05 | 7.0E-04 | −4.0E-04 | 4.2E-04 | −3.9E-04 |
SoP | 9.4E-05 | 3.9E-05 | 1.8E-04 | 3.5E-05 | 5.6E-04 | −4.0E-04 | 2.7E-04 | −2.1E-05 |
NoP | 10 | 2 | 54 | 14 | 81 | 40 | 66 | 15 |
M* | −3.4E-06 | −9.2E-07 | −9.3E-05 | 2.0E-04 | 1.4E-04 | −9.2E-05 | −4.3E-05 | 6.9E-05 |
skew | 3.6E-02 | 2.9E-02 | −1.1E-02 | 1.8E-01 | 2.5E-02 | 2.0E-01 | 2.8E-03 | 3.8E-02 |
kurt | 2.2E + 00 | 2.1E + 00 | 2.2E + 00 | 2.0E + 00 | 2.2E + 00 | 2.1E + 00 | 2.0E + 00 | 2.0E + 00 |
SS | −8.5E-07 | 6.6E-07 | 1.3E-07 | −4.4E-09 | 4.5E-09 | −5.3E-08 | −6.6E-10 | 4.6E-10 |
f | 5.8E-03 | 3.2E-03 | 2.9E-02 | 2.2E-02 | 4.3E-02 | 6.3E-02 | 3.5E-02 | 2.4E-02 |
| ||||||||
Channel 5 | Channel 6 | Channel 7 | Channel 8 | |||||
| ||||||||
Feat. | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert | Drowsy | Alert |
| ||||||||
M | 4.1E-04 | −4.5E-03 | 7.8E-05 | 4.3E-05 | 1.4E-03 | −1.8E-03 | 3.7E-04 | −5.1E-04 |
P | 5.8E-04 | −3.2E-04 | 5.1E-05 | 1.5E-04 | 1.6E-03 | −1.7E-03 | −1.5E-04 | 8.1E-04 |
SoP | 5.4E-04 | −4.3E-04 | 0.0E + 00 | 0.0E + 00 | 1.1E-03 | −1.7E-03 | 0.0E + 00 | 0.0E + 00 |
NoP | 96 | 29 | 0 | 0 | 72 | 36 | 0 | 0 |
M* | 4.5E-05 | −2.8E-05 | −7.7E-05 | 1.4E-04 | 6.2E-05 | −1.2E-04 | −1.4E-04 | 2.3E-04 |
skew | −7.5E-05 | 8.9E-02 | −2.2E-01 | −2.3E-01 | 2.5E-02 | 8.3E-02 | −3.6E-02 | 6.9E-02 |
kurt | 2.3E + 00 | 2.2E + 00 | 2.1E + 00 | 2.1E + 00 | 2.3E + 00 | 2.1E + 00 | 2.2E + 00 | 2.0E + 00 |
SS | 1.1E-10 | 2.1E-10 | 2.7E-12 | −9.0E-12 | −1.7E-14 | −6.7E-13 | 5.2E-14 | −2.2E-14 |
f | 5.2E-02 | 7.0E-02 | 0.0E + 00 | 0.0E + 00 | 3.2E-02 | 5.7E-02 | 0.0E + 00 | 0.0E + 00 |
Note: * indicates the mean value computed from ∆HbR.