Table 4.

GEV for all microstates at each frequency band under improved HHT method and traditional filtering method.

EEG Data	Methods	Delta	Theta	Alpha	Beta	Gamma
Neutral	Improved HHT	55.17	37.93	36.77	27.10	21.15
	FIR	31.79	33.20	34.89	24.50	33.19
Smoke	Improved HHT	55.14	38.29	37.15	27.57	22.87
	FIR	32.49	32.8	34.99	28.39	34.21