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Table 1 The offline results of all test-subjects. The optimal accuracies listed in the right column are found by analyzing the offline data using different bandpass filters. The optimal frequency ranges listed in the middle column are the bandpass filters that result in optimal classification with the optimal accuracy. While recording the EEG data, the electrode impedance was kept under 5 k Ω

From: Real-time brain computer interface using imaginary movements

Subjects # Optimal frequency range (Hz) CA (%)
1 07–14 61.25
2 09–18 76.46
3 19–23 61.25
4 08–30 81.67
5 12–14 66.46
6 09–17 61.88
7 10–24 78.54
8 12–15 58.54
9 05–12 99.38
10 19–27 98.75
11 20–25 67.08
12 11–14 97.29