{"dataset":{"id":"396","dataset_id":"nm000165","name":"MUniverse Grison et al 2025","description":"BIDS-EMG dataset from Grison et al. 2025 - HDsEMG recordings of tibialis anterior during isometric contractions at 10-70% MVC, 1 subject, 128-channel grids (2x64), with concurrent intramuscular EMG ground truth labels (MUniverse benchmark)","owner_user_id":19,"status":"active","github_repo":"nemarDatasets/nm000165","concept_doi":"10.82901/nemar.nm000165","latest_version_doi":"10.82901/nemar.nm000165.v1.0.1","created_at":"2026-04-08 08:30:56","updated_at":"2026-07-10 21:50:20","zenodo_concept_id":"20493618","is_sandbox":0,"visibility":"public","ezid_status":"public","enrichment_json":"{\n  \"version\": \"2.0\",\n  \"pipeline_stage\": \"validated\",\n  \"authors\": {\n    \"Agnese Grison\": {\n      \"orcid\": \"0009-0001-5981-3589\",\n      \"affiliations\": [\n        {\n          \"name\": \"Department of Bioengineering Imperial College  London UK\"\n        }\n      ]\n    },\n    \"Irene Mendez Guerra\": {},\n    \"Alexander Kenneth Clarke\": {},\n    \"Silvia Muceli\": {\n      \"orcid\": \"0000-0002-0310-1021\",\n      \"affiliations\": [\n        {\n          \"name\": \"Department of Bioengineering Imperial College  London UK\"\n        },\n        {\n          \"name\": \"Department of Electrical Engineering Chalmers University of Technology  Gothenburg Sweden\"\n        }\n      ]\n    },\n    \"Jaime Ibanez Pereda\": {},\n    \"Dario Farina\": {\n      \"orcid\": \"0000-0002-7883-2697\",\n      \"affiliations\": [\n        {\n          \"name\": \"Department of Bioengineering Imperial College  London UK\"\n        }\n      ]\n    }\n  },\n  \"related_identifiers\": [\n    {\n      \"identifier\": \"10.1113/JP287913\",\n      \"identifier_type\": \"DOI\",\n      \"relation_type\": \"References\"\n    },\n    {\n      \"identifier\": \"https://github.com/nemarDatasets/nm000165\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    },\n    {\n      \"identifier\": \"https://nemar.org/dataexplorer/detail?dataset_id=nm000165\",\n      \"identifier_type\": \"URL\",\n      \"relation_type\": \"IsDescribedBy\"\n    }\n  ],\n  \"funding_references\": [\n    {\n      \"funder_name\": \"Huawei Technologies Research & Development (UK) Ltd.\"\n    },\n    {\n      \"funder_name\": \"Engineering and Physical Sciences Research Council (EPSRC) Doctoral Prize Fellowship\"\n    },\n    {\n      \"funder_name\": \"HybridNeuro (HORIZON-WIDERA-2021-ACCESS-03- 101079392)\"\n    },\n    {\n      \"funder_name\": \"NextGenerationEU/PRTR\"\n    },\n    {\n      \"funder_name\": \"UK Research and Innovation\",\n      \"award_number\": \"EP/S023283/1\",\n      \"award_title\": \"Centre for Doctoral Training in AI for Healthcare\"\n    },\n    {\n      \"funder_name\": \"Engineering and Physical Sciences Research Council\",\n      \"award_number\": \"EP/T020970/1\",\n      \"award_title\": \"Non-Invasive Single Neuron Electrical Monitoring (NISNEM Technology) Grant\"\n    },\n    {\n      \"funder_name\": \"European Research Council\",\n      \"award_number\": \"101077693\",\n      \"award_title\": \"ECHOES (ERC Starting Grant)\"\n    },\n    {\n      \"funder_name\": \"Spanish Ministry of Science and Innovation\",\n      \"award_number\": \"CNS2022-135366\",\n      \"award_title\": \"Consolidación Investigadora grant\"\n    }\n  ],\n  \"title\": \"MUniverse Grison et al 2025\",\n  \"license\": \"CC0 BY 4.0\",\n  \"dataset_type\": \"raw\",\n  \"resource_type_general\": \"Dataset\",\n  \"modalities\": [\n    \"emg\"\n  ],\n  \"resource_type_specific\": \"EMG Dataset\",\n  \"sizes\": [\n    \"2.9 GB (21 files)\"\n  ],\n  \"formats\": [\n    \".edf\",\n    \".json\",\n    \".md\",\n    \".tsv\",\n    \".yml\"\n  ],\n  \"description\": \"High-density surface electromyography (HDsEMG) recordings from the tibialis anterior muscle of one healthy subject during submaximal isometric ankle dorsiflexions at force levels ranging from 10 to 70 percent maximum voluntary contraction. The dataset comprises 128-channel recordings from two electrode arrays and includes labeled motor unit spike trains derived from concurrent invasive EMG recordings. This dataset supports investigation of motor unit recruitment and control strategies during graded voluntary contractions.\",\n  \"methods_description\": \"HDsEMG signals were recorded from the right tibialis anterior using two 64-electrode arrays (4 mm interelectrode distance, 13×5 configuration) during isometric ankle dorsiflexions at 10-70% MVC. Contractions consisted of trapezoidal force profiles with linear ramps at 5%/second and plateaus of 20s (≤30% MVC), 15s (35-40% MVC), or 10s (50-70% MVC), separated by 120s rest periods. Force was recorded simultaneously using a load cell connected to a commercial dynamometer. Motor unit spike trains were labeled from concurrent invasive EMG recordings.\",\n  \"keywords\": [\n    {\n      \"term\": \"Electromyography\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D004576\"\n    },\n    {\n      \"term\": \"motor units\"\n    },\n    {\n      \"term\": \"Muscle Contraction\",\n      \"subject_scheme\": \"MeSH\",\n      \"value_uri\": \"http://id.nlm.nih.gov/mesh/D009119\"\n    },\n    {\n      \"term\": \"tibialis anterior\"\n    },\n    {\n      \"term\": \"isometric contraction\"\n    },\n    {\n      \"term\": \"high-density surface EMG\"\n    }\n  ],\n  \"source_hash\": \"c9cac6be9408f88edb737ad442e6e1748bd43932c4eb6233a445c42627588ac0\"\n}","last_activity_at":"2026-04-08 09:03:51","source":null,"source_id":null,"subject_count":1,"modalities":"emg","age_min":null,"age_max":null,"file_size":2882088996,"total_files":21,"tasks":"isometric10percentmvc,isometric15percentmvc,isometric20percentmvc,isometric25percentmvc,isometric30percentmvc,isometric35percentmvc,isometric40percentmvc,isometric50percentmvc,isometric60percentmvc,isometric70percentmvc","metadata_columns_error":null,"staleness_warn_stage":null,"staleness_admin_notified_at":null,"authors":"Agnese Grison, Irene Mendez Guerra, Alexander Kenneth Clarke, Silvia Muceli, Jaime Ibanez Pereda, Dario Farina","license":"CC0 BY 4.0","readme":"[![DOI](https://img.shields.io/badge/DOI-10.82901%2Fnemar.nm000165-blue)](https://doi.org/10.82901/nemar.nm000165)\n\n# Grison et al 2025: HDsEMG recordings\n\nBIDS-formatted version of a HDsEMG dataset corresponding to *[Grison et al. 2025](https://doi.org/10.1113/JP287913)*.\n\n### Overview\nOne healthy subject performed 10 submaximal (10 to 70 percent MVC) isometric\nankle dorsiflexions. EMG signals were recorded from the right tibialis anterior\nusing two arrays of 64 surface electrodes (4 mm interelectrode distance, 13x5 configuration)\nfor a total of 128 electrodes.\n\n### Protocol description\nThe participant performed one, two, or three trapezoidal contractions (with repetitions being\nspecified by the run labels) at 10, 15, 20, 25, 30, 35, 40, 50, 60, and 70 percent MVC\nwith 120 s of rest in between, consisting of linear ramps up and down performed at\n5 percent per second and a plateau maintained for 20 s up to 30 percent MVC, 15 s for 35 percent\nand 40 percent MVC, and 10 s from 50 percent to 70 percent MVC. The order of the\ncontractions was randomized.\n\n### Set-up description\nThe participant sat on a chair with the hips flexed at 30 degrees, 0 degrees being\nthe hip neutral position, and their knees fully extended. The foot of\nthe dominant leg (right) was fixed onto the pedal of a commercial dynamometer (OT Bioelettronica)\npositioned at 30 degrees in the plantarflexion direction. Force signals\nwere recorded with a load cell (CCT Transducer s.a.s.) connected in-series to the pedal\nusing the same acquisition system as for the HD-EMG recordings.\n\n### Coordinate systems\nAll electrode coordinates (reported in mm) are reported in their respective\ngrid coordinate system (*space-grid1* and *space-grid2*).\nTheir relative positions as well as the positions of the reference\nand ground electrodes are reported in a separate coordinate system (*space-lowerLeg*)\nreported in percent of the lower leg length.\n\n### Labeled motor unit spike trains\nLabeled motor unit spike trains were derived from concurrently recorded invasive EMG\nand curated by an experienced investigator (only available for *_run-01* of each trial).\n\n### Conversion\nThe dataset has been converted semi-automatically using the [*MUniverse*](https://github.com/dfarinagroup/muniverse/tree/main) software.\nSee *dataset_description.json* for further details.","bids_version":"1.11.1","sessions_count":0,"publish_date":"2026-04-08 08:30:56","embedding_dirty":0,"license_tier":"public","zarr_status":"ready","zarr_converted_at":"2026-09-04 07:49:43","zarr_store_count":10,"zarr_index_etag":"9e705fc020b6f142c262bf5dea466c0f","zarr_source_commit":"a81ec66523cde796045dd3f9de4dffb08951ffc3","archive_status":"ready","archive_size":1264502958,"archive_retry_count":0,"records_status":null,"archive_skip_reason":null,"zarr_errors":0,"zarr_failure_count":0,"zarr_deterministic":0,"zarr_failed_at":null,"num_dataset_citations":0,"num_datapaper_citations":0,"n_channels":null,"electrode_system":null,"has_hed":0,"hed_version":null,"is_exemplar":0,"bytes_present":null,"data_complete":null,"withdrawn_at":null,"withdrawn_reason":null,"archive_complete":null,"archive_absent_files":null,"archive_declared_files":null,"zarr_pool_breaks":0,"total_recording_duration":537,"recording_duration_min":26,"recording_duration_max":106,"recording_count":10,"recordings_unavailable":0,"recordings_measured":10,"channel_count_min":131,"channel_count_max":131,"sampling_frequency":null,"power_line_frequency":null,"eeg_reference":null,"placement_scheme":null,"sweep_stamps":"{\"enrichment_updated_at\":\"2026-05-18 10:58:08\",\"metadata_updated_at\":\"2026-06-01 16:00:31\",\"archive_checked_at\":\"2026-06-05 01:32:56\",\"zarr_checked_at\":\"2026-06-07 17:58:24\",\"records_checked_at\":null,\"citations_updated_at\":null,\"channel_montage_checked_at\":null,\"hed_checked_at\":\"2026-06-30 04:14:14\",\"data_checked_at\":null,\"availability_report_at\":\"2026-07-23 01:06:28\",\"signal_defaults_at\":\"2026-09-02 11:40:41\",\"recording_stats_at\":\"2026-09-05 03:00:52\",\"zarr_verify_attempted_at\":\"2026-09-09 03:02:18\",\"zarr_verified_at\":\"2026-09-09 03:02:18\",\"zarr_verified_commit\":\"a81ec66523cde796045dd3f9de4dffb08951ffc3\",\"zarr_verify_status\":\"verified\",\"zarr_verify_examples\":[],\"zarr_verify_sampled\":10.0,\"zarr_verify_checked\":10.0,\"zarr_verify_checked_channels\":10.0,\"zarr_verify_checked_duration\":10.0,\"zarr_verify_checked_rate\":10.0,\"zarr_verify_unchecked\":0.0,\"zarr_verify_mismatch_count\":0.0,\"zarr_verify_examples_truncated\":0.0}","participants":1,"num_citations":0,"latest_version":"v1.0.1","zarr_verify_status":"verified","zarr_verified_at":"2026-09-09 03:02:18","owner_username":"bruaristimunha","owner_github":"bruAristimunha","file_size_formatted":"2.68 GB","zarr_data_failures":null,"zarr_index_url":"https://zarr.nemar.org/nm000165/zarr/index.json","attestation_deposit_type":null,"attestation_key_status":null,"attestation_deidentified":null,"attestation_no_duplicate":null,"attestation_upstream_source":null,"attestation_accepted_at":null}}