EEG-Based BCI System Using Adaptive Features Extraction and Classification Procedures

Table 2

Detailed results for each participant and session. The first 2 columns list the name of the participant and the number of sessions. The third, fourth, and fifth columns show, respectively, the peak accuracy (%), average accuracy (%), and chance level (%) obtained considering the repetitions following the last of each session. The sixth column shows the result of the comparison via confidence intervals () between the average accuracy and (yes = the average accuracy is significantly different from chance; no = otherwise). The seventh column finally refers to the ITR (bits/min) of the corresponding session. In case phase was reached, the last 4 columns show, respectively, the average accuracy (%), the chance level (%), the result of comparison between the two (), and the ITR (bits/min) considering the three repetitions of .

Participant		(peak) %	(mean) %	(chance); %	(0.05)	ITR (bits/min)	(mean) %	(chance) %	(0.05)	ITR (bits/min)
P01	1	67.50	58.89	50.14	Yes	2.76	—	—	—	—
	2	88.33	80.88	49.34	Yes	35.53	89.10	51.72	Yes	60.37
	3	93.33	86.57	50.00	Yes	51.70	90.74	61.65	Yes	66.59
	4	95.00	88.92	50.00	Yes	59.72	84.95	58.91	Yes	46.67
	5	96.67	87.65	50.08	Yes	55.27	96.53	51.99	Yes	93.91
	6	95.00	88.82	50.10	Yes	59.37	91.08	49.73	Yes	67.95
P02	1	64.71	60.83	49.56	Yes	4.09	—	—	—	—
	2	63.13	57.21	49.95	Yes	1.80	—	—	—	—
	3	64.00	56.88	49.08	Yes	1.64	—	—	—	—
	4	73.75	66.62	46.56	Yes	9.75	66.46	57.35	Yes	9.56
	5	96.67	88.24	49.78	Yes	57.29	92.22	54.78	Yes	72.67
P03	1	78.13	73.31	49.94	Yes	19.56	83.46	54.71	Yes	42.35
	2	80.00	71.67	49.53	Yes	16.81	58.78	48.91	Yes	2.68
	3	70.91	64.49	45.49	Yes	7.38	87.18	58.77	Yes	53.70
	4	90.00	79.90	49.57	Yes	33.13	81.91	54.70	Yes	38.16
	5	88.33	84.61	49.98	Yes	45.65	77.09	54.26	Yes	26.83
	6	93.33	87.45	50.16	Yes	54.61	82.53	51.51	Yes	39.80
P04	1	59.23	54.98	49.66	Yes	0.86	—	—	—	—
	2	86.67	74.12	49.82	Yes	21.0	74.82	54.54	Yes	22.31
	3	72.22	65.49	48.52	Yes	8.45	60.20	48.75	Yes	3.63
	4	68.75	62.98	49.66	Yes	5.90	—	—	—	—
	5	64.38	60.99	47.80	Yes	4.22	—	—	—	—
	6	71.88	63.46	50.01	Yes	6.35	—	—	—	—
P05	1	80.63	70.29	50.00	Yes	14.68	68.01	49.83	Yes	11.49
	2	85.00	74.61	50.04	Yes	21.91	73.34	55.29	Yes	19.62
	3	70.00	65.49	48.89	Yes	8.45	50.45	45.24	Yes	0.01
	4	70.63	60.62	49.76	Yes	3.94	—	—	—	—
	5	79.23	70.41	49.54	Yes	14.85	66.13	48.81	Yes	9.17
	6	83.33	74.02	50.01	Yes	20.83	74.22	49.05	Yes	21.19
P06	1	60.00	56.32	49.95	Yes	1.39	—	—	—	—
	2	66.25	61.21	49.98	Yes	4.39	—	—	—	—
	3	70.00	65.74	49.66	Yes	8.72	47.09	39.73	Yes	0.29
	4	85.00	76.76	50.21	Yes	26.15	80.00	51.04	Yes	33.37
	5	65.63	61.25	50.00	Yes	4.42	—	—	—	—
	6	65.00	60.62	50.07	Yes	3.94	—	—	—	—
P07	1	67.50	60.99	50.00	Yes	4.22	—	—	—	—
	2	61.33	54.75	46.26	Yes	0.78	—	—	—	—
	3	76.67	66.96	49.16	Yes	10.16	50.94	42.90	Yes	0.03
	4	81.67	76.57	50.16	Yes	25.75	73.44	51.23	Yes	19.79
	5	78.57	68.99	49.96	Yes	12.81	58.49	46.54	Yes	2.51
	6	83.33	76.96	49.95	Yes	26.56	61.15	47.57	Yes	4.34
P08	1	54.00	47.53	43.53	Yes	0.21	—	—	—	—
	2	58.00	51.65	49.07	No	0.09	—	—	—	—
	3	54.29	48.40	45.33	Yes	0.09	—	—	—	—
	4	68.82	57.37	49.96	Yes	1.89	—	—	—	—
	5	60.00	55.48	48.23	Yes	1.04	—	—	—	—
	6	57.50	52.11	49.93	Yes	0.15	—	—	—	—
P09	1	55.45	46.63	44.30	Yes	0.39	—	—	—	—
	2	56.88	53.71	49.58	Yes	0.48	—	—	—	—
	3	55.88	49.48	49.84	No	0.01	—	—	—	—
	4	60.62	55.59	49.94	Yes	1.08	—	—	—	—
	5	67.14	56.72	46.21	Yes	1.57	—	—	—	—
	6	58.18	49.41	49.66	No	0.01	—	—	—	—
P10	1	55.00	46.54	48.85	No	0.41	—	—	—	—
	2	61.00	52.88	49.79	Yes	0.29	—	—	—	—
	3	53.13	48.46	49.80	No	0.08	—	—	—	—
	4	55.83	45.93	49.92	No	0.57	—	—	—	—
	5	47.50	42.87	42.37	No	1.77	—	—	—	—
	6	55.63	52.32	49.98	Yes	0.19	—	—	—	—