Hybrid brain–computer interface for biomedical cyber-physical system application using wireless embedded EEG systems

Table 3 Results of classification accuracy for five healthy subjects (S1-S5)

Task combination	Accuracy (%) of 5 healthy subjects (S1-S5)
Task combination	S1	S2	S3	S4	S5	Mean
Mental tasks
Arithmetic and rotation	85	83	79	77	85	82
Arithmetic and letter	85	83	86	77	75	81
Arithmetic and count	77	83	90	89	90	86
Rotation and letter	86	91	84	77	78	83
Rotation and count	81	82	82	92	75	82
Letter and count	77	91	90	81	86	85
Arithmetic, rotation and letter	74	75	70	66	69	71
Arithmetic, rotation and count	70	71	73	75	72	72
Arithmetic, letter and count	68	76	79	70	71	73
Rotation, letter and count	69	77	72	71	67	71
Arithmetic, rotation, letter and count	64	67	68	62	62	64
SSVEP tasks
Baseline and 6 Hz	87	81	85	80	89	84
Baseline and 13 Hz	93	92	86	82	93	89
Baseline and 16 Hz	92	82	90	84	88	87
6, 13 and 16 Hz	83	81	82	78	77	80
Eyes closed tasks
Baseline and eyes closed	99	92	98	99	98	97

ISSN: 1475-925X