Effect of EOG Signal Filtering on the Removal of Ocular Artifacts and EEG-Based Brain-Computer Interface: A Comprehensive Study

Table 3

Mean square error values (mean of all EEG channels and mean of all simulated subjects).

Low-pass EOG filter (Hz)	Simple		Adaptive filtering				Hybrid methods
	Regression; (mean ± SD)		LMS; (mean ± SD)		RLS; (mean ± SD)		REGICA; (mean ± SD)		AIR; (mean ± SD)
4	16.42	26.35	10.90	13.03	6.73	16.49	5.45	12.90	4.64	6.55
5	14.80	23.74	9.42	11.43	5.22	12.39	3.88	8.19	3.07	4.21
6	14.19	22.74	8.94	11.09	4.68	11.22	3.27	6.59	2.46	3.37
7	14.02	22.45	8.97	11.21	4.59	11.23	3.09	6.22	2.28	3.15
8	14.06	22.46	9.24	11.48	4.72	11.67	3.11	6.22	2.30	3.16
9	14.18	22.61	9.59	11.75	4.93	12.19	3.20	6.31	2.39	3.27
10	14.31	22.79	9.89	11.97	5.13	12.62	3.30	6.43	2.49	3.41
12	14.51	23.06	10.25	12.23	5.39	13.15	3.47	6.67	2.66	3.63
15	14.66	23.28	10.49	12.40	5.58	13.53	3.61	6.93	2.80	3.81
20	14.78	23.45	10.64	12.52	5.71	13.85	3.71	7.17	2.90	3.95
25	14.83	23.52	10.71	12.57	5.77	14.00	3.76	7.29	2.95	4.01
35	14.88	23.59	10.77	12.60	5.83	14.09	3.80	7.37	3.00	4.07
Unfiltered	15.00	23.78	10.91	12.71	5.95	14.18	3.92	7.48	3.12	4.24