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. 2015 Oct 29;5:15890. doi: 10.1038/srep15890

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(a) Classification accuracies of each subject, and their mean and standard deviation (chance level 33.33%). (b) Confusion matrix of online classification results. The mean classification accuracies of the left, middle, and right class are 70.83, 86.24, and 66.66%, respectively, and most false negatives of the left and right class are observed in the middle class (24.16% for the left class and 24.99% for the right class, respectively).