DOI: 10.6084/m9.figshare.15273906
title: Less common synaptic input between muscles from the same group allows for more flexible coordination strategies during a fatiguing task

description: This repository contains all the raw HD-EMG data, the extracted and the manually edited motor unit spike trains. It also inclused 2 supplemental figures (Fig. S1 and S2)<br><br>Contact:<br>Francois Hug (francois.hug@univ-cotedazur.fr)<br><br>=================================<br><br>FILES NAME: knee_extension.zip & plantarflexion.zip<br><br>These compressed files contain the raw HDsEMG signals and the motor unit spike trains identified by the automatic decomposition algorithm and manually edited.<br>Motor units were identified using the DEMUSE tool (v5.01; The University of Maribor, Slovenia)<br><br> [subject number]/[subject's code]_[condition]_[muslcle]_edited_final.mat<br><br>List of "muscles": VL, vastus lateralis; VM, vastus medialis; RF, Rectus femoris; GM, Gastrocnemius medialis, GL, Gastrocnemius lateralis; SOL, Soleus. <br>List of "conditions": 30 (trapezoid contractions at 30% of peak torque) and Tlim ( torque matched task at 30% of peak torque, until task failure)<br><br>These files can be opened with Matlab (Mathworks) or the DEMUSE tool. VARIABLES (only the variables used in the manuscript are described below) :<br><br> - DecompRuns: number of decomposition runs (50)<br> - discardChannelsVec: discarded channels for the 13*5 EMG grid. "1" means that the channnel has been discarded due to noise/artifacts. Note that one electrode was absent on a corner [1,1]. <br>- fsamp: sampling rate<br> - IED: inter-electrode distance <br>- IPTs: Innervation Pulse Train (IPT, i.e. train of motor unit discharge times as estimated by the gCKC decomposition technique <br>- MUPulses (1*number of motor units array). For each identified units, there is a vector of motor units discharge times (in datapoint).<br> - PNR: Pulse-to-noise ratio for each identified MU <br>- ref_signal: force signal (not calibrated) <br>- SIG (13*5 cell array): raw EMG signal organised on a 13*5 cell array. Each cell corresponds to an EMG channel.<br> - SIGlength: duration of the signal in seconds<br><br>=================================<br>Legends of supplemental figures<br><b>Fig. S1. </b>Differential change in neural drive across muscles of the quadriceps during the fatiguing contraction. Each graph represents a participant and depicts the cumulative spike train (normalized to its maximum) for each muscle. Coloured discs indicate for which participant the data is exposed. There is a missing cumulative spike train for the rectus femoris muscle of one participant, which is explained by our inability to decompose enough motor units from that muscle/participant.<br><br><br><b>Fig. S2. </b>Differential change in neural drive across muscles of the triceps surae during the fatiguing contraction. Each graph depicts the cumulative spike train (normalized to its maximum) for each muscle of each participant. Coloured discs indicate for which participant the data is exposed. There are missing cumulative spike trains for the soleus muscle of some participants, which is explained by our inability to decompose enough motor units from that muscle/participant