Table 1.

Microstate parameters at each frequency band under the improved HHT method.

Subjects	Microstates	MD		OPS		TCR		GEV
		neutral	smoke	neutral	smoke	neutral	smoke	neutral	smoke
Delta	D1	127.66 ± 10.97	131.01 ± 14.50	1.62 ± 0.39	1.63 ± 0.40	0.21 ± 0.06	0.22 ± 0.07	19.30 ± 6.60	20.33 ± 9.49
	D2	125.50 ± 7.63	127.18 ± 7.83	1.49 ± 0.49	1.68 ± 0.20	0.19 ± 0.07	0.21 ± 0.03	11.77 ± 2.33	12.54 ± 3.79
	D3	123.63 ± 9.19	126.21 ± 6.37	1.45 ± 0.42	1.59 ± 0.16	0.18 ± 0.06	0.20 ± 0.03	9.55 ± 1.90	9.26 ± 1.93
	D4	127.82 ± 23.78	125.16 ± 7.34	1.57 ± 0.28	1.53 ± 0.20	0.21 ± 0.09	0.19 ± 0.03	9.19 ± 3.66	8.27 ± 1.96
	D5	130.38 ± 34.43	121.22 ± 5.64	1.59 ± 0.30	1.44 ± 0.20	0.22 ± 0.11	0.18 ± 0.03	7.75 ± 2.49	6.64 ± 1.81
Theta	T1	123.31 ± 7.28	122.23 ± 8.37	1.95 ± 0.17	1.89 ± 0.16	0.24 ± 0.03	0.23 ± 0.03	10.00 ± 1.93	10.04 ± 2.32
	T2	117.21 ± 5.98	119.86 ± 6.50	1.85 ± 0.11	1.82 ± 0.14	0.22 ± 0.02	0.22 ± 0.02	8.41 ± 1.44	8.45 ± 1.61
	T3	115.51 ± 4.88	118.03 ± 6.38	1.74 ± 0.12	1.74 ± 0.11	0.20 ± 0.02	0.21 ± 0.02	7.37 ± 1.37	7.59 ± 1.19
	T4	110.36 ± 5.43	112.61 ± 5.81	1.59 ± 0.13	1.64 ± 0.13	0.18 ± 0.02	0.18 ± 0.02	6.23 ± 0.96	6.40 ± 0.79
	T5	109.74 ± 5.89	106.56 ± 4.40	1.49 ± 0.17	1.51 ± 0.15	0.16 ± 0.02	0.16 ± 0.02	5.29 ± 0.84	5.27 ± 0.89
Alpha	A1	108.60 ± 6.93	105.67 ± 5.46	2.20 ± 0.20	2.21 ± 0.17	0.24 ± 0.03	0.23 ± 0.02	9.64 ± 2.22	9.56 ± 1.50
	A2	101.13 ± 6.60	104.07 ± 3.83	2.03 ± 0.22	2.14 ± 0.15	0.21 ± 0.03	0.22 ± 0.02	7.62 ± 1.65	8.62 ± 1.65
	A3	100.27 ± 6.50	102.84 ± 5.59	1.96 ± 0.19	2.01 ± 0.17	0.20 ± 0.03	0.21 ± 0.02	7.18 ± 1.90	7.41 ± 1.47
	A4	97.52 ± 4.45	97.24 ± 6.64	1.85 ± 0.18	1.79 ± 0.15	0.18 ± 0.02	0.17 ± 0.22	6.13 ± 0.82	5.97 ± 1.03
	A5	96.73 ± 5.82	95.94 ± 4.41	1.81 ± 0.22	1.70 ± 0.15	0.18 ± 0.03	0.16 ± 0.02	5.69 ± 1.69	5.16 ± 0.90
Beta	B1	87.81 ± 6.92	83.90 ± 16.97	3.39 ± 0.16	3.88 ± 2.70	0.30 ± 0.03	0.29 ± 0.03	9.68 ± 3.47	9.48 ± 3.55
	B2	80.62 ± 5.13	80.14 ± 14.76	3.11 ± 0.45	3.81 ± 2.58	0.25 ± 0.04	0.27 ± 0.02	7.47 ± 1.89	8.67 ± 3.53
	B3	80.50 ± 3.65	76.48 ± 14.88	1.62 ± 0.39	1.63 ± 0.40	0.25 ± 0.03	0.23 ± 0.03	6.60 ± 1.17	6.35 ± 1.39
	B4	76.90 ± 5.42	76.24 ± 15.44	1.49 ± 0.49	1.68 ± 0.20	0.20 ± 0.03	0.21 ± 0.03	4.91 ± 1.18	5.25 ± 1.33
Gamma	G1	120.30 ± 52.82	138.77 ± 102.42	1.45 ± 0.42	1.59 ± 0.16	0.30 ± 0.07	0.31 ± 0.08	10.09 ± 5.82	10.83 ± 7.82
	G2	106.48 ± 53.52	93.68 ± 8.23	1.57 ± 0.28	1.53 ± 0.20	0.27 ± 0.05	0.26 ± 0.04	7.18 ± 2.88	6.52 ± 1.84
	G3	90.54 ± 12.54	87.53 ± 20.00	1.59 ± 0.30	1.44 ± 0.20	0.22 ± 0.05	0.22 ± 0.08	4.68 ± 1.28	4.71 ± 2.10
	G4	101.80 ± 57.41	94.04 ± 26.97	1.95 ± 0.17	1.89 ± 0.16	0.21 ± 0.05	0.21 ± 0.06	3.98 ± 1.17	4.51 ± 1.64