Table 2.

Classification accuracies and bitrates of all healthy participants.

VP	Copy spelling				Free spelling
	Mean accuracy		Bitrate		Mean accuracy		Bitrate
	Session 1 (in %)	Session 2 (in %)	Session 1 (bits/min)	Session 2 (bits/min)	Session 1 (in %)	Session 2 (in %)	Session 1 (bits/min)	Session 2 (bits/min)
1	82	94	3.49	4.50	80	90	3.34	4.14
2	91	91	4.22	4.22	100	100	5.17	5.17
3	58	88	1.93	3.97	40	90	1.03	4.14
4	83	75	3.57	2.99	80	60	3.34	2.05
5	78	75	3.20	2.99	100	100	5.17	5.17
6	21	100	0.31	5.17	40	100	1.03	5.17
7	94	100	4.50	5.17	100	100	5.17	5.17
8	72	88	2.79	3.97	60	90	2.05	4.14
9	98	97	4.91	4.80	100	100	5.17	5.17
10	77	84	3.13	3.65	40	90	1.03	4.14
11	90	100	4.14	5.17	80	100	3.34	5.17
M	76.73	90.18	3.29	4.23	74.55	92.73	3.26	4.51
SD	21.63	9.27	1.30	0.81	25.44	11.91	1.76	0.96

The accuracies were calculated as the percentage of correct letter selections. Accuracies of Session 2 were calculated offline.