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. 2014 Mar 3;8:24. doi: 10.3389/fncom.2014.00024

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Copyright © 2014 Russo, D'Andola, Portone, Lacquaniti and d'Avella.

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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Spatiotemporal decomposition of phasic muscle patterns. (A) R² curve for subject 1 obtained by spatiotemporal decomposition using NMF. (B) Seven spatiotemporal generators selected for subject 1. (C) Example of the reconstructions of the muscle patters for six movement conditions of subject 1 obtained with the generator illustrated in panel (B) (shaded area: original data, thick line: reconstructed data, bottom: combination coefficients represented by the height of the rectangle containing the temporal profile of each generators averaged over muscles).