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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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Best-matching NI and RNm neuronal correlates of transport/preshape-related muscle component 1. (A,E) Weighting coefficients of transport/preshape-related muscle component 1 in precision (A) and whole-hand (E) task in monkey W and monkey B, respectively. (B,F) Temporal scaling coefficients of transport/preshape-related muscle component 1. Temporal scaling coefficients shown in (B,F) specify activation of all muscles included in the muscle component according to their corresponding weighting coefficients shown in (A,E), respectively. (C,G) Temporal scaling coefficients of the NI components that best matched with transport/preshape-related muscle component 1 shown in (B,F), respectively. (D,H) Temporal scaling coefficients of the RNm components that best matched with transport/preshape-related muscle component 1 shown in (B,F) respectively. Cross-correlation magnitude between NI or RNm and muscle components is indicated by r. Behavioral event times are indicated by vertical lines: reach onset, reach offset/grasp onset, grasp offset respectively. Ordinate scales are arbitrary but uniform throughout. Time scale is normalized (0–1) across neuronal and EMG reach-to-grasp data to allow neuronal-muscle comparisons.