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. 2017 Feb 21;11:7. doi: 10.3389/fncir.2017.00007

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Copyright © 2017 Geed, McCurdy and Van Kan.

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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Temporal coupling between transport/preshape- and grasp-related muscle and neuronal components. (A,C,E) and (G,I,K) show temporal scaling coefficients of transport/preshape-related muscle (black), NI (blue), and RNm (red) components in monkey B during precision (A,C,E) and whole-hand (G,I,K) tasks. (B,D,F) and (H,J,L) show temporal scaling coefficients of the grasp-related components that correspond to the transport/preshape-related components shown in (A,C,E) and (G,I K) respectively. Slope of grasp-related components (green) is overplotted on the temporal scaling coefficient of the corresponding transport/preshape-related components to highlight synchronicity between peak activation of transport/preshape-related components and peak slope of corresponding grasp-related components. For example, (C,D) illustrate temporal coupling between transport/preshape- and grasp-related NI neuronal components in monkey B during performance of the precision task. Temporal scaling coefficients of the transport/preshape- and the corresponding grasp-related component are plotted (blue) in (C,D), respectively. The slope of the grasp-related component was calculated (see Materials and Methods) and is overplotted (green) on the temporal scaling coefficients of the preshape/transport-related component in C.