{"doi":"10.1152/jn.00472.2019","title":"When 90% of the variance is not enough: residual EMG from muscle synergy extraction influences task performance","abstract":"The muscle synergy hypothesis posits that the central nervous system simplifies motor control by grouping muscles into modules. Current techniques use dimensionality reduction, such that the identified synergies reconstruct 90% of the muscle activity. We show that residual muscle activity following such identification can have a large systematic effect on movements, even when the number of synergies approaches the number of muscles. Current synergy extraction techniques must therefore be updated to identify true physiological synergies.","journal":"Journal of Neurophysiology","year":2020,"id":91077,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":46,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9455,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":339276,"name":"Jason J. Kutch","orcid":"0000-0002-2417-4879","position":1,"is_corresponding":false},{"id":456454,"name":"Toshihiro Kawase","orcid":"0000-0001-9766-1726","position":2,"is_corresponding":false},{"id":456455,"name":"Yasuharu Koike","orcid":"0000-0002-8169-0044","position":3,"is_corresponding":false},{"id":285883,"name":"Nicolas Schweighofer","orcid":"0000-0003-3362-6088","position":4,"is_corresponding":false},{"id":456453,"name":"Victor R. Barradas","orcid":"0000-0003-3655-8770","position":0,"is_corresponding":true}],"reference_count":47,"raw_metadata":null,"created_at":"2026-07-18T22:28:45.409789Z","pmid":"32267198","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}