{"id":"https://openalex.org/W3183391249","doi":"https://doi.org/10.1007/s11517-021-02386-y","title":"Detection of microsleep states from the EEG: a comparison of feature reduction methods","display_name":"Detection of microsleep states from the EEG: a comparison of feature reduction methods","publication_year":2021,"publication_date":"2021-07-17","ids":{"openalex":"https://openalex.org/W3183391249","doi":"https://doi.org/10.1007/s11517-021-02386-y","mag":"3183391249","pmid":"https://pubmed.ncbi.nlm.nih.gov/34275069"},"language":"en","primary_location":{"id":"doi:10.1007/s11517-021-02386-y","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s11517-021-02386-y","pdf_url":null,"source":{"id":"https://openalex.org/S46300952","display_name":"Medical & Biological Engineering & Computing","issn_l":"0140-0118","issn":["0140-0118","1741-0444"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Medical & Biological Engineering & Computing","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/A5103622104","display_name":"Sudhanshu S. D. P. Ayyagari","orcid":null},"institutions":[{"id":"https://openalex.org/I185492890","display_name":"University of Canterbury","ror":"https://ror.org/03y7q9t39","country_code":"NZ","type":"education","lineage":["https://openalex.org/I185492890"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"Sudhanshu S. D. P. Ayyagari","raw_affiliation_strings":["Christchurch Neurotechnology Research Programme, Christchurch, New Zealand","Computational Design and Adaptation, University of Canterbury, Christchurch, New Zealand","Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Christchurch Neurotechnology Research Programme, Christchurch, New Zealand","institution_ids":[]},{"raw_affiliation_string":"Computational Design and Adaptation, University of Canterbury, Christchurch, New Zealand","institution_ids":["https://openalex.org/I185492890"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand","institution_ids":["https://openalex.org/I185492890"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5088922632","display_name":"Richard D. Jones","orcid":"https://orcid.org/0000-0003-2287-3358"},"institutions":[{"id":"https://openalex.org/I185492890","display_name":"University of Canterbury","ror":"https://ror.org/03y7q9t39","country_code":"NZ","type":"education","lineage":["https://openalex.org/I185492890"]},{"id":"https://openalex.org/I4210099107","display_name":"New Zealand Brain Research Institute","ror":"https://ror.org/01141nq92","country_code":"NZ","type":"facility","lineage":["https://openalex.org/I4210099107"]}],"countries":["NZ"],"is_corresponding":true,"raw_author_name":"Richard D. Jones","raw_affiliation_strings":["Christchurch Neurotechnology Research Programme, Christchurch, New Zealand. richard.jones@nzbri.org","Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand. richard.jones@nzbri.org","New Zealand Brain Research Institute, Christchurch, 8011, New Zealand. richard.jones@nzbri.org","Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand"],"raw_orcid":"https://orcid.org/0000-0003-2287-3358","affiliations":[{"raw_affiliation_string":"Christchurch Neurotechnology Research Programme, Christchurch, New Zealand. richard.jones@nzbri.org","institution_ids":["https://openalex.org/I4210099107"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand. richard.jones@nzbri.org","institution_ids":["https://openalex.org/I185492890"]},{"raw_affiliation_string":"New Zealand Brain Research Institute, Christchurch, 8011, New Zealand. richard.jones@nzbri.org","institution_ids":["https://openalex.org/I4210099107"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand","institution_ids":["https://openalex.org/I185492890"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5069800963","display_name":"Stephen J. Weddell","orcid":"https://orcid.org/0000-0002-2345-0077"},"institutions":[{"id":"https://openalex.org/I185492890","display_name":"University of Canterbury","ror":"https://ror.org/03y7q9t39","country_code":"NZ","type":"education","lineage":["https://openalex.org/I185492890"]}],"countries":["NZ"],"is_corresponding":false,"raw_author_name":"Stephen J. Weddell","raw_affiliation_strings":["Christchurch Neurotechnology Research Programme, Christchurch, New Zealand","Computational Design and Adaptation, University of Canterbury, Christchurch, New Zealand","Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Christchurch Neurotechnology Research Programme, Christchurch, New Zealand","institution_ids":[]},{"raw_affiliation_string":"Computational Design and Adaptation, University of Canterbury, Christchurch, New Zealand","institution_ids":["https://openalex.org/I185492890"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Canterbury, Christchurch, New Zealand","institution_ids":["https://openalex.org/I185492890"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5088922632"],"corresponding_institution_ids":["https://openalex.org/I185492890","https://openalex.org/I4210099107"],"apc_list":{"value":2890,"currency":"EUR","value_usd":3690},"apc_paid":null,"fwci":0.7143,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.66737862,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":"59","issue":"7-8","first_page":"1643","last_page":"1657"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10429","display_name":"EEG and Brain-Computer Interfaces","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T10429","display_name":"EEG and Brain-Computer Interfaces","score":1.0,"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/T11373","display_name":"Sleep and Work-Related Fatigue","score":0.9884999990463257,"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/T11021","display_name":"ECG Monitoring and Analysis","score":0.9883000254631042,"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/dimensionality-reduction","display_name":"Dimensionality reduction","score":0.8183627128601074},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.7391529679298401},{"id":"https://openalex.org/keywords/linear-discriminant-analysis","display_name":"Linear discriminant analysis","score":0.7258903980255127},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.7051514983177185},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6087853312492371},{"id":"https://openalex.org/keywords/principal-component-analysis","display_name":"Principal component analysis","score":0.5674418210983276},{"id":"https://openalex.org/keywords/isomap","display_name":"Isomap","score":0.5053547024726868},{"id":"https://openalex.org/keywords/autoencoder","display_name":"Autoencoder","score":0.4940777122974396},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.34019702672958374},{"id":"https://openalex.org/keywords/nonlinear-dimensionality-reduction","display_name":"Nonlinear dimensionality reduction","score":0.3033737540245056},{"id":"https://openalex.org/keywords/artificial-neural-network","display_name":"Artificial neural network","score":0.22582635283470154}],"concepts":[{"id":"https://openalex.org/C70518039","wikidata":"https://www.wikidata.org/wiki/Q16000077","display_name":"Dimensionality reduction","level":2,"score":0.8183627128601074},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.7391529679298401},{"id":"https://openalex.org/C69738355","wikidata":"https://www.wikidata.org/wiki/Q1228929","display_name":"Linear discriminant analysis","level":2,"score":0.7258903980255127},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.7051514983177185},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6087853312492371},{"id":"https://openalex.org/C27438332","wikidata":"https://www.wikidata.org/wiki/Q2873","display_name":"Principal component analysis","level":2,"score":0.5674418210983276},{"id":"https://openalex.org/C2778626561","wikidata":"https://www.wikidata.org/wiki/Q6086067","display_name":"Isomap","level":4,"score":0.5053547024726868},{"id":"https://openalex.org/C101738243","wikidata":"https://www.wikidata.org/wiki/Q786435","display_name":"Autoencoder","level":3,"score":0.4940777122974396},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.34019702672958374},{"id":"https://openalex.org/C151876577","wikidata":"https://www.wikidata.org/wiki/Q7049464","display_name":"Nonlinear dimensionality reduction","level":3,"score":0.3033737540245056},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.22582635283470154}],"mesh":[{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000465","descriptor_name":"Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D001288","descriptor_name":"Attention","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001288","descriptor_name":"Attention","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001288","descriptor_name":"Attention","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004569","descriptor_name":"Electroencephalography","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D004569","descriptor_name":"Electroencephalography","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D004569","descriptor_name":"Electroencephalography","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"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":"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":"D025341","descriptor_name":"Principal Component Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D025341","descriptor_name":"Principal Component Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D025341","descriptor_name":"Principal Component Analysis","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"doi:10.1007/s11517-021-02386-y","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s11517-021-02386-y","pdf_url":null,"source":{"id":"https://openalex.org/S46300952","display_name":"Medical & Biological Engineering & Computing","issn_l":"0140-0118","issn":["0140-0118","1741-0444"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Medical & Biological Engineering & Computing","raw_type":"journal-article"},{"id":"pmid:34275069","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/34275069","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":"Medical & biological engineering & computing","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/10","score":0.5899999737739563,"display_name":"Reduced inequalities"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":59,"referenced_works":["https://openalex.org/W28412257","https://openalex.org/W1480376833","https://openalex.org/W1510073064","https://openalex.org/W1554944419","https://openalex.org/W1568794265","https://openalex.org/W1579281390","https://openalex.org/W1770825568","https://openalex.org/W1792341371","https://openalex.org/W1899217221","https://openalex.org/W1965555277","https://openalex.org/W1988790447","https://openalex.org/W2008461991","https://openalex.org/W2009233867","https://openalex.org/W2017337590","https://openalex.org/W2020984122","https://openalex.org/W2036719927","https://openalex.org/W2037263319","https://openalex.org/W2043508111","https://openalex.org/W2043956603","https://openalex.org/W2071128523","https://openalex.org/W2093402979","https://openalex.org/W2098844365","https://openalex.org/W2100495367","https://openalex.org/W2101567415","https://openalex.org/W2101629127","https://openalex.org/W2103633133","https://openalex.org/W2109838209","https://openalex.org/W2125027820","https://openalex.org/W2127864857","https://openalex.org/W2128568765","https://openalex.org/W2133487567","https://openalex.org/W2135346934","https://openalex.org/W2140984045","https://openalex.org/W2146296918","https://openalex.org/W2148694408","https://openalex.org/W2155344811","https://openalex.org/W2156718197","https://openalex.org/W2157444450","https://openalex.org/W2161336914","https://openalex.org/W2161491890","https://openalex.org/W2165820996","https://openalex.org/W2169528473","https://openalex.org/W2294067654","https://openalex.org/W2294798173","https://openalex.org/W2303501228","https://openalex.org/W2579944688","https://openalex.org/W2594069988","https://openalex.org/W2787894218","https://openalex.org/W2790486743","https://openalex.org/W2898694110","https://openalex.org/W2902610999","https://openalex.org/W2903486342","https://openalex.org/W2979334243","https://openalex.org/W2999905431","https://openalex.org/W3094272371","https://openalex.org/W3105752574","https://openalex.org/W4229726281","https://openalex.org/W4252684946","https://openalex.org/W4285719527"],"related_works":["https://openalex.org/W2375574759","https://openalex.org/W1489327846","https://openalex.org/W4287375746","https://openalex.org/W3124275785","https://openalex.org/W2037225398","https://openalex.org/W2355395139","https://openalex.org/W2132734978","https://openalex.org/W2166963679","https://openalex.org/W2364555648","https://openalex.org/W2352321395"],"abstract_inverted_index":null,"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":4}],"updated_date":"2026-06-19T15:47:20.252518","created_date":"2025-10-10T00:00:00"}