Comparison of accuracy with different parameters.

<p>Averaged classification accuracy for each method using (A) different numbers of harmonics (<i>N</i>_<i>h</i> in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0140703#pone.0140703.e012" target="_blank">Eq (5)</a>) and (B) different number of channels (<i>N</i>_<i>c</i>) across subjects. Error bars indicate standard errors.