{"id":"https://openalex.org/W1999837281","doi":"https://doi.org/10.1109/tbme.2013.2280538","title":"Sleep and Wakefulness State Detection in Nocturnal Actigraphy Based on Movement Information","display_name":"Sleep and Wakefulness State Detection in Nocturnal Actigraphy Based on Movement Information","publication_year":2014,"publication_date":"2014-01-24","ids":{"openalex":"https://openalex.org/W1999837281","doi":"https://doi.org/10.1109/tbme.2013.2280538","mag":"1999837281","pmid":"https://pubmed.ncbi.nlm.nih.gov/24013826"},"language":"en","primary_location":{"id":"doi:10.1109/tbme.2013.2280538","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tbme.2013.2280538","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/A5108622335","display_name":"Alexandre Domingues","orcid":null},"institutions":[{"id":"https://openalex.org/I141596103","display_name":"University of Lisbon","ror":"https://ror.org/01c27hj86","country_code":"PT","type":"education","lineage":["https://openalex.org/I141596103"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Alexandre Domingues","raw_affiliation_strings":["Bioengineering Department, Technical University of Lisbon, Lisbon, Portugal","Bioeng. Dept., Tech. Univ. of Lisbon, Lisbon, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Bioengineering Department, Technical University of Lisbon, Lisbon, Portugal","institution_ids":["https://openalex.org/I141596103"]},{"raw_affiliation_string":"Bioeng. Dept., Tech. Univ. of Lisbon, Lisbon, Portugal","institution_ids":["https://openalex.org/I141596103"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036543727","display_name":"Teresa Paiva","orcid":"https://orcid.org/0000-0002-7937-7841"},"institutions":[{"id":"https://openalex.org/I141596103","display_name":"University of Lisbon","ror":"https://ror.org/01c27hj86","country_code":"PT","type":"education","lineage":["https://openalex.org/I141596103"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Teresa Paiva","raw_affiliation_strings":["Centro de Electroencefalografia e Neurologia Clinica, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal","Fac. de Med., Centro de Electroencefalografia e Neurologia Clinica, Univ. de Lisboa, Lisbon, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Centro de Electroencefalografia e Neurologia Clinica, Faculdade de Medicina da Universidade de Lisboa, Lisbon, Portugal","institution_ids":["https://openalex.org/I141596103"]},{"raw_affiliation_string":"Fac. de Med., Centro de Electroencefalografia e Neurologia Clinica, Univ. de Lisboa, Lisbon, Portugal","institution_ids":["https://openalex.org/I141596103"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5053559436","display_name":"Jo\u00e3o Sanches","orcid":"https://orcid.org/0000-0001-9089-2740"},"institutions":[{"id":"https://openalex.org/I141596103","display_name":"University of Lisbon","ror":"https://ror.org/01c27hj86","country_code":"PT","type":"education","lineage":["https://openalex.org/I141596103"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"J. Miguel Sanches","raw_affiliation_strings":["Bioengineering Department, Technical University of Lisbon, Lisbon, Portugal","Bioeng. Dept., Tech. Univ. of Lisbon, Lisbon, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Bioengineering Department, Technical University of Lisbon, Lisbon, Portugal","institution_ids":["https://openalex.org/I141596103"]},{"raw_affiliation_string":"Bioeng. Dept., Tech. Univ. of Lisbon, Lisbon, Portugal","institution_ids":["https://openalex.org/I141596103"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I141596103"],"apc_list":null,"apc_paid":null,"fwci":2.6252,"has_fulltext":false,"cited_by_count":44,"citation_normalized_percentile":{"value":0.88686144,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"61","issue":"2","first_page":"426","last_page":"434"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11963","display_name":"Impact of Light on Environment and Health","score":0.9735999703407288,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11963","display_name":"Impact of Light on Environment and Health","score":0.9735999703407288,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11373","display_name":"Sleep and Work-Related Fatigue","score":0.9617999792098999,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9581000208854675,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/actigraphy","display_name":"Actigraphy","score":0.8116808533668518},{"id":"https://openalex.org/keywords/wakefulness","display_name":"Wakefulness","score":0.7899539470672607},{"id":"https://openalex.org/keywords/sleep","display_name":"Sleep (system call)","score":0.6691423058509827},{"id":"https://openalex.org/keywords/nocturnal","display_name":"Nocturnal","score":0.5415509343147278},{"id":"https://openalex.org/keywords/movement","display_name":"Movement (music)","score":0.49067962169647217},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.42754167318344116},{"id":"https://openalex.org/keywords/physical-medicine-and-rehabilitation","display_name":"Physical medicine and rehabilitation","score":0.42441946268081665},{"id":"https://openalex.org/keywords/circadian-rhythm","display_name":"Circadian rhythm","score":0.37010690569877625},{"id":"https://openalex.org/keywords/psychology","display_name":"Psychology","score":0.36446428298950195},{"id":"https://openalex.org/keywords/electroencephalography","display_name":"Electroencephalography","score":0.36416149139404297},{"id":"https://openalex.org/keywords/neuroscience","display_name":"Neuroscience","score":0.3469696640968323},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.24158060550689697},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.1807275414466858},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.13771075010299683}],"concepts":[{"id":"https://openalex.org/C2778996325","wikidata":"https://www.wikidata.org/wiki/Q422201","display_name":"Actigraphy","level":3,"score":0.8116808533668518},{"id":"https://openalex.org/C2779320081","wikidata":"https://www.wikidata.org/wiki/Q246710","display_name":"Wakefulness","level":3,"score":0.7899539470672607},{"id":"https://openalex.org/C2775841894","wikidata":"https://www.wikidata.org/wiki/Q4683692","display_name":"Sleep (system call)","level":2,"score":0.6691423058509827},{"id":"https://openalex.org/C2777334680","wikidata":"https://www.wikidata.org/wiki/Q1607611","display_name":"Nocturnal","level":2,"score":0.5415509343147278},{"id":"https://openalex.org/C2780226923","wikidata":"https://www.wikidata.org/wiki/Q929848","display_name":"Movement (music)","level":2,"score":0.49067962169647217},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.42754167318344116},{"id":"https://openalex.org/C99508421","wikidata":"https://www.wikidata.org/wiki/Q2678675","display_name":"Physical medicine and rehabilitation","level":1,"score":0.42441946268081665},{"id":"https://openalex.org/C121446783","wikidata":"https://www.wikidata.org/wiki/Q208353","display_name":"Circadian rhythm","level":2,"score":0.37010690569877625},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.36446428298950195},{"id":"https://openalex.org/C522805319","wikidata":"https://www.wikidata.org/wiki/Q179965","display_name":"Electroencephalography","level":2,"score":0.36416149139404297},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.3469696640968323},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.24158060550689697},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.1807275414466858},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.13771075010299683},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","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":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008390","descriptor_name":"Markov Chains","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008390","descriptor_name":"Markov Chains","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008390","descriptor_name":"Markov Chains","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D009068","descriptor_name":"Movement","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D009068","descriptor_name":"Movement","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D009068","descriptor_name":"Movement","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012815","descriptor_name":"Signal Processing, Computer-Assisted","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012890","descriptor_name":"Sleep","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D012890","descriptor_name":"Sleep","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D012890","descriptor_name":"Sleep","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D014851","descriptor_name":"Wakefulness","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D014851","descriptor_name":"Wakefulness","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D014851","descriptor_name":"Wakefulness","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D016002","descriptor_name":"Discriminant Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016002","descriptor_name":"Discriminant Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016002","descriptor_name":"Discriminant Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D056044","descriptor_name":"Actigraphy","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D056044","descriptor_name":"Actigraphy","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D056044","descriptor_name":"Actigraphy","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1109/tbme.2013.2280538","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tbme.2013.2280538","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:24013826","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/24013826","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}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Reduced inequalities","score":0.6499999761581421,"id":"https://metadata.un.org/sdg/10"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":27,"referenced_works":["https://openalex.org/W85350352","https://openalex.org/W117545607","https://openalex.org/W119672040","https://openalex.org/W156595367","https://openalex.org/W187111953","https://openalex.org/W202036063","https://openalex.org/W1277966809","https://openalex.org/W1495669890","https://openalex.org/W1507001215","https://openalex.org/W1551782597","https://openalex.org/W1803162127","https://openalex.org/W1981345616","https://openalex.org/W1987571194","https://openalex.org/W1991133427","https://openalex.org/W2006191578","https://openalex.org/W2011917973","https://openalex.org/W2026196372","https://openalex.org/W2065565096","https://openalex.org/W2117478831","https://openalex.org/W2118509868","https://openalex.org/W2150492704","https://openalex.org/W2169604076","https://openalex.org/W2336489032","https://openalex.org/W2396760804","https://openalex.org/W2411371282","https://openalex.org/W2979832949","https://openalex.org/W6603460400"],"related_works":["https://openalex.org/W2385266891","https://openalex.org/W2086473373","https://openalex.org/W2118509868","https://openalex.org/W2122880265","https://openalex.org/W2753951941","https://openalex.org/W2021051938","https://openalex.org/W2071215075","https://openalex.org/W2980881190","https://openalex.org/W2434785688","https://openalex.org/W2279082464"],"abstract_inverted_index":{"Wrist":[0],"actigraphy":[1],"(ACT)":[2],"is":[3,104,148,183,191],"a":[4,17,29,59,77,102,142,152],"low-cost":[5],"and":[6,35,39,61,116,162,171],"well-established":[7],"technique":[8],"for":[9,32,36,186],"long-term":[10],"monitoring":[11],"of":[12,41,64,80,165],"human":[13],"activity.":[14],"It":[15],"has":[16],"special":[18],"relevance":[19],"in":[20,119],"sleep":[21,43,71],"studies,":[22],"where":[23],"its":[24],"noninvasive":[25],"nature":[26],"makes":[27],"it":[28],"valuable":[30],"tool":[31],"behavioral":[33],"characterization":[34],"the":[37,52,85,94,120,160,163,166,177,181],"detection":[38,139],"diagnosis":[40,78],"some":[42],"disorders.":[44],"The":[45,124,157],"traditional":[46],"sleep/wakefulness":[47],"state":[48,97,121,144],"estimation":[49,122],"algorithms":[50],"from":[51,58,76],"nocturnal":[53],"ACT":[54],"data":[55],"are":[56,168],"unbalanced":[57,96,111],"sensitivity":[60,115],"specificity":[62,117,164],"points":[63],"view":[65],"since":[66],"they":[67],"tend":[68],"to":[69,106,140],"overestimate":[70],"state,":[72],"with":[73,109,133],"severe":[74],"consequences":[75],"point":[79],"view.":[81],"They":[82],"usually":[83],"maximize":[84],"overall":[86],"accuracy":[87],"that":[88],"does":[89],"not":[90],"take":[91],"into":[92],"account":[93],"highly":[95],"distribution.":[98],"In":[99],"this":[100,110,189],"paper,":[101],"method":[103,126,167],"proposed":[105,125],"appropriately":[107],"deal":[108],"problem,":[112],"achieving":[113],"similar":[114],"scores":[118],"process.":[123],"combines":[127],"two":[128,134],"linear":[129],"discriminant":[130],"classifiers,":[131],"trained":[132],"different":[135],"criteria":[136],"involving":[137],"movement":[138,187],"generate":[141],"first":[143],"estimate.":[145],"This":[146],"result":[147],"then":[149],"refined":[150],"by":[151],"Hidden":[153],"Markov":[154],"Model-based":[155],"algorithm.":[156],"global":[158],"accuracy,":[159],"sensitivity,":[161],"77.8%,":[169],"75.6%,":[170],"81.6%,":[172],"respectively,":[173],"performing":[174],"better":[175],"than":[176],"tested":[178],"algorithms.":[179],"If":[180],"performance":[182],"assessed":[184],"only":[185],"periods,":[188],"improvement":[190],"even":[192],"higher.":[193]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":6},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":7},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":5}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
