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. 2018 Aug 23;8:12657. doi: 10.1038/s41598-018-31174-2

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Differential paths to adaptation. The top row presents the changes in AP intensities for TS1 across the different blocks, while the bottom row presents the same results for TS2. For blocks B3, Ad3 and Ad6 the solid lines (color coded as the synergies in Fig. 4) represent the average intensities of the last 5 repetitions for each target, averaged across subjects, while for blocks Ad1, Ad4, Wo1 and Wo3 the solid lines represent the average intensities of the first 5 repetitions for each target, averaged across subjects. For the B3 plots the dashed colored lines represent the workspace spanned by the synergies at baseline as reconstructed using all the targets, while for all the other blocks the dashed colored lines represent the workspace spanned by the synergies at baseline rotated 45° CW. The dashed black and grey lines between the two rows represent the order of repetition for each group. Group1 (black dashed line) performed TS1 during Ad1–Ad3, TS2 during Ad4–Ad6, TS1 during Wo1 and TS2 during Wo3. Group2 (grey dashed line) performed TS2 during Ad1–Ad3, TS1 during Ad4–Ad6, TS2 during Wo1 and TS1 during Wo2.