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. 2017 Feb 27;5:9. doi: 10.3389/fbioe.2017.00009

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Copyright © 2017 Patel, Craig, Schumacher, Burns, Florescu and Vinjamuri.

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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(A) A separate program was used for synergy repetition training. The program imitated the hand’s current configuration using a custom virtual hand model. Numerical indicators showed the error between current and target synergy postures at each joint. Subjects were told if a joint fell outside of the 20° error range. (B) On a second monitor, the target synergy posture was shown. Two views were given (a top angled view and a side view) so that subjects were able to imitate each of the eight joints.