{"id":"https://openalex.org/W2976709981","doi":"https://doi.org/10.3390/s19194136","title":"Effect of Closed-Loop Vibration Stimulation on Heart Rhythm during Naps","display_name":"Effect of Closed-Loop Vibration Stimulation on Heart Rhythm during Naps","publication_year":2019,"publication_date":"2019-09-24","ids":{"openalex":"https://openalex.org/W2976709981","doi":"https://doi.org/10.3390/s19194136","mag":"2976709981","pmid":"https://pubmed.ncbi.nlm.nih.gov/31554268"},"language":"en","primary_location":{"id":"doi:10.3390/s19194136","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s19194136","pdf_url":"https://www.mdpi.com/1424-8220/19/19/4136/pdf?version=1569322720","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/19/19/4136/pdf?version=1569322720","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101410870","display_name":"Sang Ho Choi","orcid":"https://orcid.org/0000-0003-2861-0778"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Sang Ho Choi","raw_affiliation_strings":["Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul 03080, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul 03080, Korea","institution_ids":["https://openalex.org/I139264467"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008454274","display_name":"Heenam Yoon","orcid":"https://orcid.org/0000-0002-5397-5245"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Heenam Yoon","raw_affiliation_strings":["Artificial Intelligence Laboratory, Software Center, LG Electronics, Seoul 06772, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Artificial Intelligence Laboratory, Software Center, LG Electronics, Seoul 06772, Korea","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101061948","display_name":"Hyung Won Jin","orcid":null},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyung Won Jin","raw_affiliation_strings":["Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul 03080, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul 03080, Korea","institution_ids":["https://openalex.org/I139264467"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102960531","display_name":"Hyun Bin Kwon","orcid":"https://orcid.org/0000-0002-8235-9134"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyun Bin Kwon","raw_affiliation_strings":["Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 03080, Korea","Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul 03080, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 03080, Korea","institution_ids":["https://openalex.org/I139264467"]},{"raw_affiliation_string":"Interdisciplinary Program in Bioengineering, Graduate School, Seoul National University, Seoul 03080, Korea","institution_ids":["https://openalex.org/I139264467"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019947521","display_name":"Seong Min Oh","orcid":"https://orcid.org/0000-0001-8895-8990"},"institutions":[{"id":"https://openalex.org/I2802835388","display_name":"Seoul National University Hospital","ror":"https://ror.org/01z4nnt86","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I139264467","https://openalex.org/I2802835388"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Seong Min Oh","raw_affiliation_strings":["Department of Neuropsychiatry and Center for Sleep and Chronobiology, Seoul National University Hospital, Seoul 03080, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neuropsychiatry and Center for Sleep and Chronobiology, Seoul National University Hospital, Seoul 03080, Korea","institution_ids":["https://openalex.org/I2802835388"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100733183","display_name":"Yu Jin Lee","orcid":"https://orcid.org/0000-0001-5195-2579"},"institutions":[{"id":"https://openalex.org/I2802835388","display_name":"Seoul National University Hospital","ror":"https://ror.org/01z4nnt86","country_code":"KR","type":"healthcare","lineage":["https://openalex.org/I139264467","https://openalex.org/I2802835388"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Yu Jin Lee","raw_affiliation_strings":["Department of Neuropsychiatry and Center for Sleep and Chronobiology, Seoul National University Hospital, Seoul 03080, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Neuropsychiatry and Center for Sleep and Chronobiology, Seoul National University Hospital, Seoul 03080, Korea","institution_ids":["https://openalex.org/I2802835388"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101416074","display_name":"Kwang Suk Park","orcid":"https://orcid.org/0000-0001-8725-2996"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Kwang Suk Park","raw_affiliation_strings":["Department of Biomedical Engineering, College of Medicine, Seoul National University, Seoul 03080, Korea","Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 03080, Korea"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Biomedical Engineering, College of Medicine, Seoul National University, Seoul 03080, Korea","institution_ids":["https://openalex.org/I139264467"]},{"raw_affiliation_string":"Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul 03080, Korea","institution_ids":["https://openalex.org/I139264467"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5101416074"],"corresponding_institution_ids":["https://openalex.org/I139264467"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2598},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2598},"fwci":0.9858,"has_fulltext":true,"cited_by_count":16,"citation_normalized_percentile":{"value":0.79110466,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"19","issue":"19","first_page":"4136","last_page":"4136"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10745","display_name":"Heart Rate Variability and Autonomic Control","score":0.9975000023841858,"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/T10745","display_name":"Heart Rate Variability and Autonomic Control","score":0.9975000023841858,"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/T10429","display_name":"EEG and Brain-Computer Interfaces","score":0.9911999702453613,"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":0.9897000193595886,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/rhythm","display_name":"Rhythm","score":0.817808210849762},{"id":"https://openalex.org/keywords/stimulation","display_name":"Stimulation","score":0.7004347443580627},{"id":"https://openalex.org/keywords/closed-loop","display_name":"Closed loop","score":0.5126189589500427},{"id":"https://openalex.org/keywords/vibration","display_name":"Vibration","score":0.48963743448257446},{"id":"https://openalex.org/keywords/heart-rhythm","display_name":"Heart Rhythm","score":0.41215115785598755},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.4003397226333618},{"id":"https://openalex.org/keywords/internal-medicine","display_name":"Internal medicine","score":0.39804741740226746},{"id":"https://openalex.org/keywords/neuroscience","display_name":"Neuroscience","score":0.33140137791633606},{"id":"https://openalex.org/keywords/cardiology","display_name":"Cardiology","score":0.3256164789199829},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.3214823007583618},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2666622996330261},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.25337648391723633},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.2503686547279358},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.2378709316253662},{"id":"https://openalex.org/keywords/psychology","display_name":"Psychology","score":0.22363147139549255},{"id":"https://openalex.org/keywords/control-engineering","display_name":"Control engineering","score":0.09766530990600586},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.09659689664840698}],"concepts":[{"id":"https://openalex.org/C135343436","wikidata":"https://www.wikidata.org/wiki/Q170406","display_name":"Rhythm","level":2,"score":0.817808210849762},{"id":"https://openalex.org/C24998067","wikidata":"https://www.wikidata.org/wiki/Q4114622","display_name":"Stimulation","level":2,"score":0.7004347443580627},{"id":"https://openalex.org/C3019251811","wikidata":"https://www.wikidata.org/wiki/Q5135346","display_name":"Closed loop","level":2,"score":0.5126189589500427},{"id":"https://openalex.org/C198394728","wikidata":"https://www.wikidata.org/wiki/Q3695508","display_name":"Vibration","level":2,"score":0.48963743448257446},{"id":"https://openalex.org/C2780065318","wikidata":"https://www.wikidata.org/wiki/Q2058605","display_name":"Heart Rhythm","level":2,"score":0.41215115785598755},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.4003397226333618},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.39804741740226746},{"id":"https://openalex.org/C169760540","wikidata":"https://www.wikidata.org/wiki/Q207011","display_name":"Neuroscience","level":1,"score":0.33140137791633606},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.3256164789199829},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.3214823007583618},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2666622996330261},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.25337648391723633},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2503686547279358},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2378709316253662},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.22363147139549255},{"id":"https://openalex.org/C133731056","wikidata":"https://www.wikidata.org/wiki/Q4917288","display_name":"Control engineering","level":1,"score":0.09766530990600586},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.09659689664840698},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0}],"mesh":[{"descriptor_ui":"D002940","descriptor_name":"Circadian Rhythm","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D002940","descriptor_name":"Circadian Rhythm","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D002940","descriptor_name":"Circadian Rhythm","qualifier_ui":"Q000502","qualifier_name":"physiology","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":"D006339","descriptor_name":"Heart Rate","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D006339","descriptor_name":"Heart Rate","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D006339","descriptor_name":"Heart Rate","qualifier_ui":"Q000502","qualifier_name":"physiology","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":"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":"D014732","descriptor_name":"Vibration","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014732","descriptor_name":"Vibration","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014732","descriptor_name":"Vibration","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":5,"locations":[{"id":"doi:10.3390/s19194136","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s19194136","pdf_url":"https://www.mdpi.com/1424-8220/19/19/4136/pdf?version=1569322720","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:31554268","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/31554268","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":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:a8467d68ba5141d2bb114286393d9fb2","is_oa":true,"landing_page_url":"https://doaj.org/article/a8467d68ba5141d2bb114286393d9fb2","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 19, Iss 19, p 4136 (2019)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/1424-8220/19/19/4136/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/s19194136","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:6806257","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6806257","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors (Basel)","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s19194136","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s19194136","pdf_url":"https://www.mdpi.com/1424-8220/19/19/4136/pdf?version=1569322720","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G4297820854","display_name":null,"funder_award_id":"2017R1A2B2004061","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"funders":[{"id":"https://openalex.org/F4320320671","display_name":"National Research Foundation","ror":"https://ror.org/05s0g1g46"},{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2976709981.pdf","grobid_xml":"https://content.openalex.org/works/W2976709981.grobid-xml"},"referenced_works_count":42,"referenced_works":["https://openalex.org/W1516596993","https://openalex.org/W1559653492","https://openalex.org/W1562612802","https://openalex.org/W1620414136","https://openalex.org/W1883704930","https://openalex.org/W1975136983","https://openalex.org/W1982499480","https://openalex.org/W1985200706","https://openalex.org/W1988438451","https://openalex.org/W1989378721","https://openalex.org/W1990373402","https://openalex.org/W1993435683","https://openalex.org/W1996425218","https://openalex.org/W2003623977","https://openalex.org/W2005519566","https://openalex.org/W2020143967","https://openalex.org/W2022839057","https://openalex.org/W2042491780","https://openalex.org/W2042652332","https://openalex.org/W2064202809","https://openalex.org/W2066598509","https://openalex.org/W2070569619","https://openalex.org/W2104638127","https://openalex.org/W2108974305","https://openalex.org/W2110999934","https://openalex.org/W2133589238","https://openalex.org/W2161643237","https://openalex.org/W2163016920","https://openalex.org/W2285072859","https://openalex.org/W2289293589","https://openalex.org/W2574431823","https://openalex.org/W2774630994","https://openalex.org/W2790459342","https://openalex.org/W2791186536","https://openalex.org/W2909475760","https://openalex.org/W2912085835","https://openalex.org/W2914936922","https://openalex.org/W2921477788","https://openalex.org/W4236818187","https://openalex.org/W4254185350","https://openalex.org/W4298441315","https://openalex.org/W6836092167"],"related_works":["https://openalex.org/W2072492413","https://openalex.org/W2997159972","https://openalex.org/W4296378967","https://openalex.org/W2064134577","https://openalex.org/W2373995729","https://openalex.org/W2811365615","https://openalex.org/W2746930032","https://openalex.org/W2464566068","https://openalex.org/W52824158","https://openalex.org/W4379388157"],"abstract_inverted_index":{"Sleep":[0],"plays":[1],"a":[2,29,35,49,93,180],"primary":[3],"function":[4],"for":[5,17,43,95,194],"health":[6,196],"and":[7,10,39,60,104,118,170,190],"sustains":[8],"physical":[9],"cognitive":[11],"performance.":[12],"Although":[13],"various":[14],"stimulation":[15,37,52,106,140,156,164,182],"systems":[16],"enhancing":[18,195],"sleep":[19,189,199],"have":[20],"been":[21],"developed,":[22],"they":[23,91],"are":[24],"difficult":[25],"to":[26,126,184],"use":[27],"on":[28,69],"long-term":[30],"basis.":[31],"This":[32,176],"paper":[33],"proposes":[34],"novel":[36],"system":[38,53,165],"confirms":[40],"its":[41],"feasibility":[42],"sleep.":[44],"Specifically,":[45],"in":[46,85,89],"this":[47],"study,":[48],"closed-loop":[50],"vibration":[51],"that":[54,112,161],"detects":[55],"the":[56,70,73,86,113,127,131,138,144,148,154,162,172,186,192],"heart":[57,168],"rate":[58],"(HR)":[59],"applies":[61],"-n%":[62],"stimulus":[63,149],"beats":[64],"per":[65],"minute":[66],"(BPM)":[67],"computed":[68],"basis":[71],"of":[72,77,188],"previous":[74],"5":[75],"min":[76],"HR":[78,108,145],"data":[79],"was":[80],"developed.":[81],"Ten":[82],"subjects":[83],"participated":[84],"evaluation":[87],"experiment,":[88],"which":[90],"took":[92],"nap":[94],"approximately":[96],"90":[97],"min.":[98],"The":[99,158],"experiment":[100],"comprised":[101],"one":[102],"baseline":[103,128],"three":[105],"conditions.":[107],"variability":[109],"analysis":[110],"showed":[111],"normalized":[114,132],"low":[115],"frequency":[116,120],"(LF)":[117],"LF/high":[119],"(HF)":[121],"parameters":[122],"significantly":[123,135,151],"decreased":[124],"compared":[125],"condition,":[129],"while":[130],"HF":[133],"parameter":[134],"increased":[136,152],"under":[137,153],"-3%":[139,155],"condition.":[141,157],"In":[142],"addition,":[143],"density":[146],"around":[147],"BPM":[150],"results":[159],"confirm":[160],"proposed":[163],"could":[166],"influence":[167],"rhythm":[169],"stabilize":[171],"autonomic":[173],"nervous":[174],"system.":[175],"study":[177],"thus":[178],"provides":[179],"new":[181],"approach":[183],"enhance":[185],"quality":[187],"has":[191],"potential":[193],"levels":[197],"through":[198],"manipulation.":[200]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":2},{"year":2018,"cited_by_count":1}],"updated_date":"2026-05-21T06:26:12.895304","created_date":"2025-10-10T00:00:00"}