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. 2016 Jan 28;13:11. doi: 10.1186/s12984-016-0119-8

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© Yi et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 8 — The average result of SVM-RFE in PSD-based method from the 12 subjects. The horizontal and vertical axes represent the number of channels selected and the classification accuracies, respectively. The blue and red lines represent the first and second conditions, respectively. Conditions 1 and 2 indicate that the time intervals are 1 s and 2 s, respectively, for sub-movement imagination