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. 2016 Aug 22;10:8. doi: 10.3389/fnbot.2016.00008

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Copyright © 2016 Chen, Feng and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Performance of virtual ankle control under different feedback conditions. (A) Absolute errors of TT1 for different target ankle angles. (B) Absolute errors of TT2 for different target ankle angles.