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Table 2 Offline performances

From: Operation of a brain-computer interface walking simulator for individuals with spinal cord injury

Offline performances

Participant

Day

P (correct | f ) (%)

p-value

1

1

71.9 ± 2.2

6.29×10−6

 

2

89.4 ± 1.2

1.53×10−17

 

3

83.9 ± 2.0

1.30×10−12

 

4

84.0 ± 1.9

1.30×10−12

 

5

82.2 ± 1.7

6.55×10−12

 

Avg.

82.3 ± 6.4

1.26×10−6

2

1

62.2 ± 1.8

6.00×10−3

 

2

62.0 ± 1.8

1.05×10−2

 

3

60.5 ± 2.0

1.76×10−2

 

4

91.6 ± 1.7

1.60×10−19

 

5

82.5 ± 1.6

6.55×10−12

 

Avg.

71.8 ± 14.3

6.82×10−3

3

1

90.3 ± 1.3

1.66×10−18

 

2

83.9 ± 1.1

1.30×10−12

 

3

72.8 ± 2.9

2.35×10−6

 

4

81.0 ± 2.1

1.35×10−10

 

5

83.3 ± 1.2

1.30×10−12

 

Avg.

82.3 ± 6.3

4.69×10−7

4

1

74.7 ± 1.7

2.82×10−7

 

2

92.3 ± 1.6

1.36×10−20

 

3

81.5 ± 1.3

3.07×10−11

 

4

80.5 ± 2.0

1.35×10−10

 

5

83.5 ± 2.2

1.30×10−12

 

Avg.

82.5 ± 6.4

5.64×10−8

5

1

82.7 ± 1.3

6.55×10−12

 

2

86.3 ± 1.3

6.56×10−15

 

3

78.9 ± 1.4

2.17×10−9

 

4

82.2 ± 1.5

6.55×10−12

 

5

81.0 ± 1.3

1.35×10−10

 

Avg.

82.2 ± 2.7

4.30×10−10

  1. Offline performances represented as classification accuracies estimated using 10 runs of stratified 10-fold CV. The classification accuracy is defined as the probability of correctly classifying a trial given the feature, f, i.e. P(correct| f )=P(I| f I)P(I)+P(W| f W)P(W), where P(I| f I) and P(W| f W) are defined in Online calibration in the Methods section, and P(I) and P(W) are the prior probabilities of idling and walking class, respectively.