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. 2018 Nov 12;8:16669. doi: 10.1038/s41598-018-35018-x

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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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Relation between grasps during hand pre-shaping phase based on: (A) the RDM and MDS of the EEG representation of the centro-parietal and parietal (CP-P) brain regions in the lower beta frequency band, and (B) the RDM of the categorical Object shape model. The colors of the MDS correspond to the more conventional type categorization of grasps: red indicates power grasps, green, precision grasps and blue, intermediate grasps. The grey color indicates all the pairwise relations between grasps.