The volitional control of individual motor units is constrained within low-dimensional neural manifolds by common inputs

This repository contains all the <b>raw</b> electromyographic (EMG) data and the <b>edited</b> motor unit spike trains. These data are associated with the following article submitted to <i>Journal of Neuroscience</i>: The volitional control of individual motor units is constrained within low-dimensional neural manifolds by common inputs. The <b>preprint</b> can be found at: https://www.biorxiv.org/content/10.1101/2024.01.05.573816v1Contact: <b>Julien Rossato</b> ([e-mail]), <b>Simon Avrillon </b>([e-mail]) or <b>François Hug </b>([e-mail])------<b>[muscle group]_[Participant]/[condition].mat</b><br>List of "muscle group": gastrocnemii (triceps surae experiment), vastii (quadriceps experiment)List of "Participant": P#1 to P#10 for the triceps surae experiment, and P#1 to P#5 for the quadriceps experimentList of “condition”: MVC (maximal voluntary contraction), Training_baseline (reference contractions [torque feedback]), Online_MU_trial (online contractions [motor unit + torque feedback])These files can be opened with Matlab (Mathworks) and with our open-source software for decompositing and editing motor units (https://github.com/simonavrillon/MUedit)Below are the decription of the main variables used in the article mentioned avove:signal.fsamp: sampling ratesignal.nChan: number of recroded channels (we used EMG grids of 64 electrodes)<b>signal.data: raw EMG signals</b>signal.muscle: name of the recorded musclessignal.EMGmask: excluded EMG channels due to noise or artefactssignal.path: effective torquesignal.path3D: data from the 3D force gauge (only for triceps surae experiment)signal.feedneuro: target to be reached (for online control tasks) in each of the 10 contractions. For more information about the targets, please refer to the article.parameters.MUID: ID of the decomposed motor units (GL, gastrocnemius lateralis; GM, gastrocnemius medialis; VL, vastus lateralis; VM vastus medialis)<b>e</b><b>dition.Dischargetimes: discharge times for each identified motor units (after manual editing).</b>edition.Pulsetrain. Pulse train for each identified motor units<i>Please note: Although we recorded data from the vastus lateralis and tibialis anterior muscles during the triceps surae experiments, we did not run the decomposition algorithm on these data.</i><br>------<b>MU_pairs.mat</b>This file contains information about the pairs of motor units, which have been tested during the online tasks.ID: ID of the participant where GM stands for triceps surae experiment and VL stands for quadriceps experimentMUID1: first motor unit of the pair being considered (it corresponds to parameters.MUID in the other files)MUID2: second motor unit of the pair being considered targetMU: target to be reached in each of the 10 contractions. For more information about the targets, please refer to the article.<br>