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Table 1 Results in time-locked step

From: Asynchronous BCI control using high-frequency SSVEP

Subject

Hs = 1,5 s

Hs = 1,75 s

Hs = 2 s

Hs = 2,25 s

 

TP

FP

FN

Time [s]

bits/trial

bits/min

TP

FP

FN

Time [s]

bits/trial

bits/min

TP

FP

FN

Time [s]

bits/trial

bits/min

TP

FP

FN

Time [s]

bits/trial

bits/min

1

100

0

0

2.66 ± 0.36

2

45.1

100

0

0

2.91 ± 0.36

2

41.2

100

0

0

3.16 ± 0.36

2

38

100

0

0

3.41 ± 0.36

2

35.2

2

98.8

1.25

0

2.84 ± 0.69

1.89

39.9

98.8

0

1.25

3.09 ± 0.69

1.98

38.5

98.8

0

1.25

3.43 ± 0.88

1.98

34.7

97.5

0

2,5

3.65 ± 0.77

1.8

29.9

3

80

18.8

1.3

3.11 ± 0.8

0.99

19.20

81.3

13.8

5

3.44 ± 0.95

1.14

19.99

81.3

7.5

11.3

3.86 ± 1.12

1.33

20.7

82.5

3.8

13.8

4.12 ± 1.12

1.47

21.50

4

78.8

21.3

0.0

2.98 ± 0.96

0.92

18.5

77.5

17.5

5.0

3.52 ± 1.37

0.92

15.7

72.5

15

12.5

3.74 ± 1.32

1

16.2

66.3

10

23.8

3.98 ± 1.30

1.04

15.8

5

56.3

40

3.8

4.02 ± 1.39

0.38

5.70

62.5

26.3

11.3

4.67 ± 1.44

0.67

8.60

65

15

20

5.14 ± 1.55

0.92

10.76

57.5

10

32.5

5.36 ± 1.55

0.92

10.37

6

65

31.3

3.8

3.83 ± 1.34

0.59

9.18

62.5

27.5

10

4.29 ± 1.41

0.64

9

53.8

17.5

28.8

4.77 ± 1.48

0.75

9.42

45

10

45

5.07 ± 1.53

0.75

8.93

  1. The values represent the percentages of True Positive (TP), False Positive (FP), and False Negative (FN), the average time (mean ± std) by trial and the ITR in bits/trial and in bits/minute, evaluated for different H S . In bold: the best results per subject.