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.