Figure 8.

Accuracy percentages and p-values for the testing of an improvement in performance over CSP when the right hand versus left hand movement imagination are discriminated. The results reveal that, in general and except in a few isolated cases, the null hypothesis that the other methods do not significantly improve the performance over CSP cannot be discarded. (a) Average accuracy obtained by the algorithms for each subject; (b) p-values of the t-tests that compare whether the performance of the alternative algorithms is significantly better than the one obtained by CSP. The horizontal dashed line represents the threshold level of significance of 5%.