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. 2016 Sep 22;10:471. doi: 10.3389/fnhum.2016.00471

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Copyright © 2016 Ansuini, Cavallo, Campus, Quarona, Koul and Becchio.

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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Factor Loadings for significant Principal Components. (A) Graphical representation of factor loadings across all trials from all participants (heat maps) for the 13 Principal Components (PCs) for each kinematics variable (i.e., wrist velocity, grip aperture, wrist weight, x-, y-, and z-coordinate for both index finger and thumb) over normalized movement time (from 10% up to 100% in 10 step of 10%). Note that factor loadings greater than 0.8 are considered to load significantly on the component. (B) A table summarizing the kinematic parameters encoded by each of the 13 Principal Components (PCs), together with the time window in which they are mainly involved.