Table 4.

The BCI analysis results for three regions for four AO modes and MI modes.

Subjects	AO-0.25 Hz	AO-1.5 Hz	AO-2.75 Hz	AO-4.0 Hz	MI
OCCIPITAL REGION
S1	69.27	79.17	54.43	59.38	60.16
S2	77.08	69.79	59.11	59.38	59.90
S3	69.01	76.30	54.95	62.24	57.03
S4	69.27	81.77	68.75	61.46	57.29
S5	67.71	65.36	56.25	54.43	58.85
S6	76.30	76.30	57.03	58.85	53.13
Average	71.44	74.78	58.42	59.29	57.72
Standard	4.12	6.10	5.33	2.73	2.60
ITR (bits/min)	2.06	2.78	0.31	0.38	0.26
SENSORIMOTOR REGION
S1	69.01	75.52	56.77	56.77	55.47
S2	72.14	68.49	57.03	57.29	57.03
S3	56.77	67.45	58.33	55.47	54.69
S4	54.69	67.19	56.51	52.60	54.69
S5	60.42	70.83	55.21	56.77	67.97
S6	57.55	66.15	53.91	57.03	78.29
Average	61.76	69.27	56.29	55.99	61.35
Standard	7.14	3.45	1.54	1.77	9.72
ITR (bits/min)	0.61	1.65	0.17	0.16	0.56
“OCCIPITALx + SENSORIMOTOR” REGION
S1	55.21	73.96	56.25	56.25	55.47
S2	71.61	69.53	60.68	58.85	55.21
S3	65.10	59.11	54.43	58.33	56.25
S4	58.33	81.25	56.77	54.17	55.47
S5	62.76	64.32	56.77	55.47	61.72
S6	59.38	65.36	55.99	54.95	78.39
Average 62.07	68.92	56.81	56.33	60.42
Standard	5.82	7.84	2.08	1.88	9.14
ITR (bits/min)	0.64	1.59	0.20	0.17	0.47

Potentials covering central-parietal regions C3, C1, Cz, C2, C4, P3, P1, Pz, P2, and P4 were chosen for the sensorimotor region, while potentials covering parietal-occipital regions PO5, PO3, POz, PO4, PO6, O1, Oz, and O2 were chosen for the occipital region. The “sensorimotor + occipital” region included both sets of potentials. The average accuracies and standard deviations of BCI classification and ITR were calculated.