Table 2.

The average proportion of each class of features among the top-N features across 16 subjects.

Top-N Features	The Average Proportion of Each Class of Features
	Theta	Alpha	Beta	Gamma
4	0.03	0.02	0.27	0.68
8	0.04	0.09	0.18	0.69
16	0.07	0.11	0.25	0.57
32	0.10	0.12	0.29	0.49
64	0.13	0.13	0.35	0.39
96	0.20	0.21	0.29	0.30
128	0.25	0.25	0.25	0.25