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Table 2 Overall Performances

From: Brain-Computer Interface Controlled Functional Electrical Stimulation System for Ankle Movement

Subject

Foot

EEG-band (Hz)

Classification Accuracy

Current (mA)

Pulse Width (μ sec)

Frequency (Hz)

Lag (sec)

ρ

OM

FA

1

R

[8-38]

94.4%

100

140

20

3.1

0.67

0

0

2

L

[22-50]

97.6%

100

200

30

1.4

0.72

0

0

3

L

[8-50]

85.1%

90

200

30

2.7

0.59

0

1

4

R

[8-30]

91.9%

88

200

20

3.0

0.62

0

0

5

R

[10-50]

93.6%

100

120

20

2.9

0.77

0

0

  1. The performances of five subjects. The columns list: the foot that was voluntarily dorsiflexed, the EEG frequency band that was used for classification, (offline) classification accuracy as established by 10-fold cross-validation, the stimulating current amplitude, its pulse width and frequency, (online) lag between voluntary and BCI-FES-mediated dorsifiexion epochs, temporal correlation between these epochs (ρ) calculated at the corresponding lags, omissions (OM), and false alarms (FA).