{"id":"https://openalex.org/W2129717293","doi":"https://doi.org/10.1109/tbme.2008.2002158","title":"Improved Time--Frequency Analysis of Atrial Fibrillation Signals Using Spectral Modeling","display_name":"Improved Time--Frequency Analysis of Atrial Fibrillation Signals Using Spectral Modeling","publication_year":2008,"publication_date":"2008-11-06","ids":{"openalex":"https://openalex.org/W2129717293","doi":"https://doi.org/10.1109/tbme.2008.2002158","mag":"2129717293","pmid":"https://pubmed.ncbi.nlm.nih.gov/19126451"},"language":"en","primary_location":{"id":"doi:10.1109/tbme.2008.2002158","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tbme.2008.2002158","pdf_url":null,"source":{"id":"https://openalex.org/S5240358","display_name":"IEEE Transactions on Biomedical Engineering","issn_l":"0018-9294","issn":["0018-9294","1558-2531"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Biomedical Engineering","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","pubmed"],"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/A5020690678","display_name":"V. D. A. Corino","orcid":null},"institutions":[{"id":"https://openalex.org/I93860229","display_name":"Politecnico di Milano","ror":"https://ror.org/01nffqt88","country_code":"IT","type":"education","lineage":["https://openalex.org/I93860229"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"V.D.A. Corino","raw_affiliation_strings":["Department of Biomedical Engineering, Politecnico di Milano, 20133 Milan, Italy. valentina.corino@polimi.it","Dept. of Biomed. Eng., Politec. di Milano, Milan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Biomedical Engineering, Politecnico di Milano, 20133 Milan, Italy. valentina.corino@polimi.it","institution_ids":["https://openalex.org/I93860229"]},{"raw_affiliation_string":"Dept. of Biomed. Eng., Politec. di Milano, Milan","institution_ids":["https://openalex.org/I93860229"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066168605","display_name":"Luca Mainardi","orcid":"https://orcid.org/0000-0002-6276-6314"},"institutions":[{"id":"https://openalex.org/I93860229","display_name":"Politecnico di Milano","ror":"https://ror.org/01nffqt88","country_code":"IT","type":"education","lineage":["https://openalex.org/I93860229"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"L.T. Mainardi","raw_affiliation_strings":["Dept. of Biomed. Eng., Politec. di Milano, Milan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Biomed. Eng., Politec. di Milano, Milan","institution_ids":["https://openalex.org/I93860229"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5105349387","display_name":"Martin Stridh","orcid":"https://orcid.org/0000-0002-1204-8912"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]},{"id":"https://openalex.org/I93860229","display_name":"Politecnico di Milano","ror":"https://ror.org/01nffqt88","country_code":"IT","type":"education","lineage":["https://openalex.org/I93860229"]}],"countries":["IT","SE"],"is_corresponding":false,"raw_author_name":"M. Stridh","raw_affiliation_strings":["Politecnico di Milano, Milano, Lombardia, IT","Dept. of Electr. & Inf. Technol., Lund Univ., Lund"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Politecnico di Milano, Milano, Lombardia, IT","institution_ids":["https://openalex.org/I93860229"]},{"raw_affiliation_string":"Dept. of Electr. & Inf. Technol., Lund Univ., Lund","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5052426139","display_name":"Leif S\u00f6rnmo","orcid":"https://orcid.org/0000-0001-8524-2292"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"L. Sornmo","raw_affiliation_strings":["Lunds Universitet, Lund, SE","Dept. of Electr. & Inf. Technol., Lund Univ., Lund"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Lunds Universitet, Lund, SE","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Dept. of Electr. & Inf. Technol., Lund Univ., Lund","institution_ids":["https://openalex.org/I187531555"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.4347,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.84154027,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":97},"biblio":{"volume":"55","issue":"12","first_page":"2723","last_page":"2730"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11021","display_name":"ECG Monitoring and Analysis","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T11021","display_name":"ECG Monitoring and Analysis","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10217","display_name":"Cardiac electrophysiology and arrhythmias","score":0.9962999820709229,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10065","display_name":"Atrial Fibrillation Management and Outcomes","score":0.9724000096321106,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/harmonics","display_name":"Harmonics","score":0.8164531588554382},{"id":"https://openalex.org/keywords/superposition-principle","display_name":"Superposition principle","score":0.7739673256874084},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.49277547001838684},{"id":"https://openalex.org/keywords/spectral-analysis","display_name":"Spectral analysis","score":0.4269745647907257},{"id":"https://openalex.org/keywords/fundamental-frequency","display_name":"Fundamental frequency","score":0.41821420192718506},{"id":"https://openalex.org/keywords/harmonic-analysis","display_name":"Harmonic analysis","score":0.4169127941131592},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3456253409385681},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.29150277376174927},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.28431957960128784},{"id":"https://openalex.org/keywords/mathematical-analysis","display_name":"Mathematical analysis","score":0.2135273516178131},{"id":"https://openalex.org/keywords/spectroscopy","display_name":"Spectroscopy","score":0.12227794528007507},{"id":"https://openalex.org/keywords/voltage","display_name":"Voltage","score":0.1161382794380188}],"concepts":[{"id":"https://openalex.org/C188414643","wikidata":"https://www.wikidata.org/wiki/Q3001183","display_name":"Harmonics","level":3,"score":0.8164531588554382},{"id":"https://openalex.org/C27753989","wikidata":"https://www.wikidata.org/wiki/Q284885","display_name":"Superposition principle","level":2,"score":0.7739673256874084},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.49277547001838684},{"id":"https://openalex.org/C2983668108","wikidata":"https://www.wikidata.org/wiki/Q280453","display_name":"Spectral analysis","level":3,"score":0.4269745647907257},{"id":"https://openalex.org/C10513763","wikidata":"https://www.wikidata.org/wiki/Q1331774","display_name":"Fundamental frequency","level":2,"score":0.41821420192718506},{"id":"https://openalex.org/C131770355","wikidata":"https://www.wikidata.org/wiki/Q876215","display_name":"Harmonic analysis","level":2,"score":0.4169127941131592},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3456253409385681},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.29150277376174927},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.28431957960128784},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.2135273516178131},{"id":"https://openalex.org/C32891209","wikidata":"https://www.wikidata.org/wiki/Q483666","display_name":"Spectroscopy","level":2,"score":0.12227794528007507},{"id":"https://openalex.org/C165801399","wikidata":"https://www.wikidata.org/wiki/Q25428","display_name":"Voltage","level":2,"score":0.1161382794380188},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":false},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":false},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":false},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D001281","descriptor_name":"Atrial Fibrillation","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D003627","descriptor_name":"Data Interpretation, Statistical","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003627","descriptor_name":"Data Interpretation, Statistical","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D003627","descriptor_name":"Data Interpretation, Statistical","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004562","descriptor_name":"Electrocardiography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D004562","descriptor_name":"Electrocardiography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D004562","descriptor_name":"Electrocardiography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D005583","descriptor_name":"Fourier Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005583","descriptor_name":"Fourier Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005583","descriptor_name":"Fourier Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006325","descriptor_name":"Heart Atria","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D006325","descriptor_name":"Heart Atria","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D006325","descriptor_name":"Heart Atria","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D006329","descriptor_name":"Heart Conduction System","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D006329","descriptor_name":"Heart Conduction System","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D006329","descriptor_name":"Heart Conduction System","qualifier_ui":"Q000503","qualifier_name":"physiopathology","is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D010363","descriptor_name":"Pattern Recognition, Automated","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D016011","descriptor_name":"Normal Distribution","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016011","descriptor_name":"Normal Distribution","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016011","descriptor_name":"Normal Distribution","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016018","descriptor_name":"Least-Squares Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016018","descriptor_name":"Least-Squares Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016018","descriptor_name":"Least-Squares Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":3,"locations":[{"id":"doi:10.1109/tbme.2008.2002158","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tbme.2008.2002158","pdf_url":null,"source":{"id":"https://openalex.org/S5240358","display_name":"IEEE Transactions on Biomedical Engineering","issn_l":"0018-9294","issn":["0018-9294","1558-2531"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Biomedical Engineering","raw_type":"journal-article"},{"id":"pmid:19126451","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/19126451","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE transactions on bio-medical engineering","raw_type":null},{"id":"pmh:oai:lup.lub.lu.se:4bfe6035-7f9e-42d6-bbd3-5d933f5c0a85","is_oa":false,"landing_page_url":"https://lup.lub.lu.se/record/1376023","pdf_url":null,"source":{"id":"https://openalex.org/S4306400536","display_name":"Lund University Publications (Lund University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I187531555","host_organization_name":"Lund University","host_organization_lineage":["https://openalex.org/I187531555"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISSN: 1558-2531","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":30,"referenced_works":["https://openalex.org/W171447616","https://openalex.org/W574413806","https://openalex.org/W1966412222","https://openalex.org/W1975997711","https://openalex.org/W1981170441","https://openalex.org/W1987826508","https://openalex.org/W2009603268","https://openalex.org/W2010256336","https://openalex.org/W2013074517","https://openalex.org/W2017487767","https://openalex.org/W2027709297","https://openalex.org/W2031012912","https://openalex.org/W2033631439","https://openalex.org/W2036816448","https://openalex.org/W2100388501","https://openalex.org/W2102719690","https://openalex.org/W2104749146","https://openalex.org/W2107863775","https://openalex.org/W2110739536","https://openalex.org/W2118117461","https://openalex.org/W2121603050","https://openalex.org/W2124033264","https://openalex.org/W2131439816","https://openalex.org/W2149092351","https://openalex.org/W2152623762","https://openalex.org/W2157313735","https://openalex.org/W2160545150","https://openalex.org/W3143785501","https://openalex.org/W6607112554","https://openalex.org/W6675635353"],"related_works":["https://openalex.org/W2026048727","https://openalex.org/W2525517395","https://openalex.org/W2162458593","https://openalex.org/W2031753233","https://openalex.org/W2543604558","https://openalex.org/W2536922071","https://openalex.org/W2143833827","https://openalex.org/W3041419339","https://openalex.org/W2141308018","https://openalex.org/W2125960862"],"abstract_inverted_index":{"In":[0],"patients":[1,120],"with":[2,121,176,206],"atrial":[3,73],"fibrillation":[4],"(AF),":[5],"the":[6,11,47,50,67,72,83,98,101,129,138,144,157,160,169,174,179,182,191,196,207,231],"fibrillatory":[7,193],"frequency":[8,194],"trend":[9],"and":[10,69,135,159,171],"time-dependent":[12],"spectral":[13,20,24,51,54,139,213],"characteristics":[14,81],"can":[15],"be":[16],"investigated":[17],"using":[18],"a":[19,58,186],"profile":[21,25],"technique.":[22],"The":[23,33,87,104],"is":[26,38,63],"updated":[27],"by":[28,57,200,230],"fitting":[29,96],"each":[30],"short-time":[31],"spectrum.":[32,86,103],"aim":[34],"of":[35,49,60,71,82,97,133,137,155,181],"this":[36],"study":[37],"to":[39,100,178],"develop":[40],"model-based":[41],"means":[42],"for":[43,65,79,168,173],"stricter":[44],"control":[45],"on":[46,108,114],"update":[48],"profile.":[52],"A":[53],"model":[55,88,99],"defined":[56],"superposition":[59],"Gaussian":[61],"functions":[62],"suggested":[64],"describing":[66],"fundamental":[68,158,170],"harmonics":[70,175],"waves":[74],"during":[75],"AF,":[76],"thereby":[77],"accounting":[78],"basic":[80],"typical":[84],"AF":[85],"parameters":[89],"are":[90],"obtained":[91,216],"from":[92,118],"weighted":[93],"least":[94],"squares":[95],"observed":[102,185],"method":[105],"was":[106,148,164,198],"tested":[107],"simulated":[109,125],"signals":[110],"as":[111,113,195],"well":[112,228],"48":[115],"ECG":[116],"recordings":[117],"15":[119],"persistent":[122],"AF.":[123],"Using":[124],"signals,":[126],"we":[127],"assessed":[128],"accuracy":[130],"in":[131,204,217,221],"terms":[132],"magnitude":[134,154],"width":[136],"peaks.":[140],"For":[141],"SNR=0":[142],"dB,":[143],"maximum":[145],"normalized":[146],"error":[147,197],"less":[149,165],"than":[150,166,202],"0.2":[151],"when":[152],"estimating":[153],"both":[156],"harmonics,":[161],"whereas":[162],"it":[163],"0.15":[167],"0.7":[172],"respect":[177],"estimation":[180],"width.":[183],"We":[184],"marked":[187],"improvement":[188],"while":[189],"tracking":[190],"main":[192],"reduced":[199],"more":[201],"50%":[203],"comparison":[205],"original":[208,232],"method.":[209,233],"Analyzing":[210],"ECGs,":[211],"reliable":[212],"profiles":[214],"were":[215,226],"all":[218],"recordings,":[219],"even":[220],"those":[222],"cases":[223],"(5/48)":[224],"that":[225],"not":[227],"characterized":[229]},"counts_by_year":[{"year":2018,"cited_by_count":3},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":2}],"updated_date":"2026-01-13T01:12:25.745995","created_date":"2025-10-10T00:00:00"}