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. 2013 Sep 3;7:120. doi: 10.3389/fncom.2013.00120

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Copyright © 2013 Gentner, Edmunds, Pai 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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Selection of number of synergies and synergy structure. (A) Fraction of total variation explained (R²) by the synergies extracted from Block 4 (last baseline block, black) and by the synergies extracted from Block 5 (first perturbation block, gray) were similar for all subjects (different plots). (B) Synergies from all subjects (rows) extracted from Block 4 (black bars) and Block 5 (gray bars). The numeric value in each plot represents the similarity between the two synergies, quantified by the scalar product of the normalized synergies (cosine-value).