{"id":"https://openalex.org/W2040052855","doi":"https://doi.org/10.1109/biorob.2014.6913847","title":"A novel muscle synergy extraction method to explain the equilibrium-point trajectory and endpoint stiffness during human upper-limb movements on a horizontal plane","display_name":"A novel muscle synergy extraction method to explain the equilibrium-point trajectory and endpoint stiffness during human upper-limb movements on a horizontal plane","publication_year":2014,"publication_date":"2014-08-01","ids":{"openalex":"https://openalex.org/W2040052855","doi":"https://doi.org/10.1109/biorob.2014.6913847","mag":"2040052855"},"language":"en","primary_location":{"id":"doi:10.1109/biorob.2014.6913847","is_oa":false,"landing_page_url":"https://doi.org/10.1109/biorob.2014.6913847","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"5th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5068381299","display_name":"Kanna Uno","orcid":null},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Kanna Uno","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031852411","display_name":"T. Oku","orcid":"https://orcid.org/0000-0002-5805-2378"},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takanori Oku","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069830011","display_name":"Pipatthana Phatiwuttipat","orcid":null},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Pipatthana Phatiwuttipat","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084548699","display_name":"Keitaro Koba","orcid":null},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Keitaro Koba","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072958095","display_name":"Yuto Yamashita","orcid":null},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yuto Yamashita","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045238313","display_name":"Kenta Murakami","orcid":"https://orcid.org/0000-0003-4451-8680"},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kenta Murakami","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101486609","display_name":"Mitsunori Uemura","orcid":"https://orcid.org/0000-0003-3135-9844"},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Mitsunori Uemura","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006182265","display_name":"Hiroaki Hirai","orcid":"https://orcid.org/0000-0002-2404-082X"},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroaki Hirai","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5113737834","display_name":"Fumio Miyazaki","orcid":null},"institutions":[{"id":"https://openalex.org/I98285908","display_name":"Osaka University","ror":"https://ror.org/035t8zc32","country_code":"JP","type":"education","lineage":["https://openalex.org/I98285908"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Fumio Miyazaki","raw_affiliation_strings":["Department of Mechanical Science and Bioengineering, Osaka University","Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University"],"affiliations":[{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Osaka University","institution_ids":["https://openalex.org/I98285908"]},{"raw_affiliation_string":"Department of Mechanical Science and Bioengineering, Graduate School of Engineering Science, Osaka University","institution_ids":["https://openalex.org/I98285908"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":9,"corresponding_author_ids":["https://openalex.org/A5068381299"],"corresponding_institution_ids":["https://openalex.org/I98285908"],"apc_list":null,"apc_paid":null,"fwci":1.6814,"has_fulltext":false,"cited_by_count":11,"citation_normalized_percentile":{"value":0.8324642,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"621","last_page":"626"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10784","display_name":"Muscle activation and electromyography studies","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10784","display_name":"Muscle activation and electromyography studies","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10982","display_name":"Motor Control and Adaptation","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2805","display_name":"Cognitive Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10114","display_name":"Balance, Gait, and Falls Prevention","score":0.9912999868392944,"subfield":{"id":"https://openalex.org/subfields/3612","display_name":"Physical Therapy, Sports Therapy and Rehabilitation"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/stiffness","display_name":"Stiffness","score":0.6755526661872864},{"id":"https://openalex.org/keywords/ellipse","display_name":"Ellipse","score":0.5755500197410583},{"id":"https://openalex.org/keywords/horizontal-plane","display_name":"Horizontal plane","score":0.5549898743629456},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.519284188747406},{"id":"https://openalex.org/keywords/invariant","display_name":"Invariant (physics)","score":0.4622623026371002},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.41594916582107544},{"id":"https://openalex.org/keywords/upper-limb","display_name":"Upper limb","score":0.4103699326515198},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.39521852135658264},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.33659976720809937},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.32752251625061035},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.30035945773124695},{"id":"https://openalex.org/keywords/anatomy","display_name":"Anatomy","score":0.28115347027778625},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.23938718438148499},{"id":"https://openalex.org/keywords/structural-engineering","display_name":"Structural engineering","score":0.17190030217170715},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.17007988691329956},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.15170708298683167},{"id":"https://openalex.org/keywords/biology","display_name":"Biology","score":0.128938227891922}],"concepts":[{"id":"https://openalex.org/C2779372316","wikidata":"https://www.wikidata.org/wiki/Q569057","display_name":"Stiffness","level":2,"score":0.6755526661872864},{"id":"https://openalex.org/C74261601","wikidata":"https://www.wikidata.org/wiki/Q40112","display_name":"Ellipse","level":2,"score":0.5755500197410583},{"id":"https://openalex.org/C37222873","wikidata":"https://www.wikidata.org/wiki/Q17027571","display_name":"Horizontal plane","level":2,"score":0.5549898743629456},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.519284188747406},{"id":"https://openalex.org/C190470478","wikidata":"https://www.wikidata.org/wiki/Q2370229","display_name":"Invariant (physics)","level":2,"score":0.4622623026371002},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.41594916582107544},{"id":"https://openalex.org/C2776660947","wikidata":"https://www.wikidata.org/wiki/Q841423","display_name":"Upper limb","level":2,"score":0.4103699326515198},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.39521852135658264},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.33659976720809937},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.32752251625061035},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.30035945773124695},{"id":"https://openalex.org/C105702510","wikidata":"https://www.wikidata.org/wiki/Q514","display_name":"Anatomy","level":1,"score":0.28115347027778625},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.23938718438148499},{"id":"https://openalex.org/C66938386","wikidata":"https://www.wikidata.org/wiki/Q633538","display_name":"Structural engineering","level":1,"score":0.17190030217170715},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.17007988691329956},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.15170708298683167},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.128938227891922},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/biorob.2014.6913847","is_oa":false,"landing_page_url":"https://doi.org/10.1109/biorob.2014.6913847","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"5th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1489339218","https://openalex.org/W1965780078","https://openalex.org/W1968674647","https://openalex.org/W1972837991","https://openalex.org/W2018979642","https://openalex.org/W2089745666","https://openalex.org/W2111340349","https://openalex.org/W2112707027","https://openalex.org/W2154006563","https://openalex.org/W2220667570","https://openalex.org/W2317215606","https://openalex.org/W2400963264","https://openalex.org/W4246438230","https://openalex.org/W6629386462"],"related_works":["https://openalex.org/W2371136327","https://openalex.org/W4293234107","https://openalex.org/W2370549269","https://openalex.org/W2386824811","https://openalex.org/W2354618530","https://openalex.org/W2081226903","https://openalex.org/W2363452175","https://openalex.org/W2375225935","https://openalex.org/W2542179972","https://openalex.org/W2360394947"],"abstract_inverted_index":{"Based":[0],"on":[1,16,27,127,168],"the":[2,8,17,33,57,102,111,141,149,154,161,169,174],"idea":[3],"of":[4,11,59,82,104,110,160,173],"synergy":[5,100,152],"to":[6,31],"explore":[7],"building":[9],"blocks":[10],"movements,":[12],"this":[13],"study":[14],"focused":[15],"muscle":[18,36,62,80,95,99,106,112,151],"space":[19],"for":[20,137,144,157],"reaching":[21,83],"movements":[22,84],"by":[23,85,91],"human":[24,86],"upper":[25,87],"limbs":[26,88],"a":[28,48,66,128,134],"horizontal":[29],"plane":[30],"estimate":[32],"relationship":[34],"among":[35],"synergies,":[37],"equilibrium-point":[38],"(EP)":[39],"trajectories,":[40],"and":[41,64,140,147,164,171],"endpoint":[42,162,175],"stiffness":[43,163,176],"in":[44,123],"two":[45,109],"ways:":[46],"(1)":[47,79],"novel":[49],"estimation":[50,68],"method":[51,69],"that":[52,70,78,117],"analyzes":[53],"electromyographic":[54],"signals":[55],"under":[56],"concept":[58],"agonist-antagonist":[60],"(A-A)":[61],"pairs":[63],"(2)":[65,97],"conventional":[67],"uses":[71],"mechanical":[72],"perturbations.":[73],"The":[74],"experimental":[75],"results":[76],"suggest":[77],"activities":[81],"are":[89,114],"represented":[90],"only":[92],"three":[93],"functional":[94],"synergies;":[96],"each":[98],"balances":[101],"coacti-vations":[103],"A-A":[105],"pairs;":[107],"(3)":[108],"synergies":[113],"invariant":[115,155],"bases":[116],"form":[118],"an":[119],"EP":[120],"trajectory":[121],"described":[122],"polar":[124],"coordinates":[125],"centered":[126],"shoulder":[129],"joint,":[130],"where":[131],"one":[132],"is":[133,143,153],"composite":[135],"unit":[136],"radial":[138],"movement":[139],"other":[142],"angular":[145],"movement;":[146],"(4)":[148],"third":[150],"basis":[156],"additional":[158],"adjustment":[159],"has":[165],"some":[166],"influence":[167],"direction":[170],"size":[172],"ellipse.":[177]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":3},{"year":2014,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
