{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T20:41:51Z","timestamp":1781124111692,"version":"3.54.1"},"reference-count":33,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-017"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-012"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2021,9,1]],"date-time":"2021-09-01T00:00:00Z","timestamp":1630454400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-004"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Psychophysiology"],"published-print":{"date-parts":[[2021,9]]},"DOI":"10.1016\/j.ijpsycho.2021.07.001","type":"journal-article","created":{"date-parts":[[2021,7,9]],"date-time":"2021-07-09T11:32:45Z","timestamp":1625830365000},"page":"86-93","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":12,"special_numbering":"C","title":["The effect of COVID-19 lockdowns on sleep time perception: Comparing actigraphy and sleep diary measures"],"prefix":"10.1016","volume":"167","author":[{"given":"Ling","family":"He","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenrui","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuan","family":"Gao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiao","family":"Gao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xu","family":"Lei","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0005","doi-asserted-by":"crossref","first-page":"241","DOI":"10.1016\/j.patbio.2014.07.003","article-title":"Insomnia and sleep misperception","volume":"62","author":"Bastien","year":"2014","journal-title":"Pathol. Biol."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0010","doi-asserted-by":"crossref","first-page":"R795","DOI":"10.1016\/j.cub.2020.06.021","article-title":"Effects of the covid-19 lockdown on human sleep and rest-activity rhythms","volume":"30","author":"Blume","year":"2020","journal-title":"Curr. Biol."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0015","doi-asserted-by":"crossref","first-page":"603","DOI":"10.5664\/jcsm.3780","article-title":"Impact of windows and daylight exposure on overall health and sleep quality of office workers: a case-control pilot study","volume":"10","author":"Boubekri","year":"2014","journal-title":"J. Clin. Sleep Med."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0020","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/0165-1781(89)90047-4","article-title":"The Pittsburgh sleep quality index: a new instrument for psychiatric practice and research","volume":"28","author":"Buysse","year":"1989","journal-title":"Psychiatry Res."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0025","doi-asserted-by":"crossref","DOI":"10.1111\/jsr.13074","article-title":"Changes in sleep pattern, sense of time and digital media use during covid-19 lockdown in Italy","volume":"29","author":"Cellini","year":"2020","journal-title":"J. Sleep Res."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0030","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1249\/MSS.0b013e3181ed61a3","article-title":"Validation of accelerometer wear and nonwear time classification algorithm","volume":"43","author":"Choi","year":"2011","journal-title":"Med. Sci. Sports Exerc."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0035","doi-asserted-by":"crossref","first-page":"461","DOI":"10.1093\/sleep\/15.5.461","article-title":"Automatic sleep\/wake identification from wrist activity","volume":"15","author":"Cole","year":"1992","journal-title":"Sleep"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0040","doi-asserted-by":"crossref","DOI":"10.1016\/j.psychres.2020.113347","article-title":"Prevalence of posttraumatic and general psychological stress during covid-19: a rapid review and meta-analysis","volume":"292","author":"Cooke","year":"2020","journal-title":"Psychiatry Res."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0045","doi-asserted-by":"crossref","first-page":"586157","DOI":"10.3389\/fpsyg.2020.586157","article-title":"Reduction of physical activity levels during the covid-19 pandemic might negatively disturb sleep pattern","volume":"11","author":"Diniz","year":"2020","journal-title":"Front. Psychol."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0050","series-title":"Physical Activity in the United States Measured by Accelerometer","first-page":"181","volume":"40","author":"Troiano","year":"2008"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0055","series-title":"The Effect of Stay-at-home Orders on Covid-19 Cases and Fatalities in the United States","author":"Fowler","year":"2020"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0060","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1017\/S0048577201393198","article-title":"Emotion regulation: affective, cognitive, and social consequences","volume":"39","author":"Gross","year":"2003","journal-title":"Psychophysiology"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0065","doi-asserted-by":"crossref","first-page":"4779","DOI":"10.3390\/ijerph17134779","article-title":"Effects of covid-19 lockdown on mental health and sleep disturbances in Italy","volume":"17","author":"Gualano","year":"2020","journal-title":"Int. J. Environ. Res. Public Health"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0070","doi-asserted-by":"crossref","first-page":"370","DOI":"10.4103\/psychiatry.IndianJPsychiatry_523_20","article-title":"Changes in sleep pattern and sleep quality during covid-19 lockdown","volume":"62","author":"Gupta","year":"2020","journal-title":"Indian J. Psychiatry"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0075","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1016\/j.cmrp.2020.03.011","article-title":"Effects of covid-19 pandemic in daily life","volume":"10","author":"Haleem","year":"2020","journal-title":"Curr. Med. Res. Pract."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0080","doi-asserted-by":"crossref","DOI":"10.1016\/j.psychres.2020.112954","article-title":"Generalized anxiety disorder, depressive symptoms and sleep quality during covid-19 outbreak in China: a web-based cross-sectional survey","volume":"288","author":"Huang","year":"2020","journal-title":"Psychiatry Res."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0085","doi-asserted-by":"crossref","first-page":"810","DOI":"10.1097\/PSY.0b013e3182359e77","article-title":"Psychosocial factors and sleep efficiency: discrepancies between subjective and objective evaluations of sleep","volume":"73","author":"Jackowska","year":"2011","journal-title":"Psychosom. Med."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0090","doi-asserted-by":"crossref","first-page":"299","DOI":"10.5664\/jcsm.8930","article-title":"Sleep problems during the covid-19 pandemic by population: a systematic review and meta-analysis","volume":"17","author":"Jahrami","year":"2021","journal-title":"J. Clin. Sleep Med."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0095","doi-asserted-by":"crossref","first-page":"427","DOI":"10.1007\/s10865-015-9617-6","article-title":"The effects of physical activity on sleep: a meta-analytic review","volume":"38","author":"Kredlow","year":"2015","journal-title":"J. Behav. Med."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0100","article-title":"Non-rem sleep eeg spectral analysis in insomnia","volume":"38","author":"Krystal","year":"2008","journal-title":"Psychiatr. Ann."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0105","doi-asserted-by":"crossref","first-page":"293","DOI":"10.5717\/jenb.2014.18.3.293","article-title":"Effects of exercise with or without light exposure on sleep quality and hormone reponses","volume":"18","author":"Lee","year":"2014","journal-title":"J. Exerc. Nutr. Biochem."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0110","doi-asserted-by":"crossref","first-page":"1417","DOI":"10.5664\/jcsm.8524","article-title":"Insomnia and psychological reactions during the covid-19 outbreak in China","volume":"16","author":"Li","year":"2020","journal-title":"J. Clin. Sleep Med."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0115","doi-asserted-by":"crossref","first-page":"495","DOI":"10.3389\/fpsyt.2020.00495","article-title":"Objective and subjective assessments of sleep in children: comparison of actigraphy, sleep diary completed by children and parents' estimation","volume":"11","author":"Mazza","year":"2020","journal-title":"Front Psychiatry"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0120","series-title":"Insomnia: Psychological Assessment and Management","author":"Morin","year":"1993"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0125","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0241237","article-title":"Psychosocial factors affecting sleep misperception in middle-aged community-dwelling adults","volume":"15","author":"Park","year":"2020","journal-title":"PLoS One"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0130","first-page":"1297","article-title":"Negative impact of the covid-19 pandemic on sleep quantitative parameters, quality, and circadian alignment: implications for psychological well-being and emotional regulation","volume":"19","author":"Salehinejad","year":"2020","journal-title":"EXCLI J."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0135","doi-asserted-by":"crossref","DOI":"10.1016\/j.psychres.2020.113098","article-title":"Psychological outcomes associated with stay-at-home orders and the perceived impact of covid-19 on daily life","volume":"289","author":"Tull","year":"2020","journal-title":"Psychiatry Res."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0140","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pone.0142533","article-title":"A novel, open access method to assess sleep duration using a wrist-worn accelerometer","volume":"10","author":"Van Hees","year":"2015","journal-title":"PLoS One"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0145","doi-asserted-by":"crossref","first-page":"zsx165","DOI":"10.1093\/sleep\/zsx165","article-title":"Linking light exposure and subsequent sleep: a field polysomnography study in humans","volume":"40","author":"Wams","year":"2017","journal-title":"Sleep"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0150","doi-asserted-by":"crossref","first-page":"394","DOI":"10.1111\/aphw.12255","article-title":"Effects of physical activity and sleep quality on well-being: a wrist actigraphy study during the pandemic","volume":"13","author":"Wang","year":"2021","journal-title":"Appl. Psychol. Health Well Being"},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0160","doi-asserted-by":"crossref","first-page":"R797","DOI":"10.1016\/j.cub.2020.06.022","article-title":"Sleep in university students prior to and during covid-19 stay-at-home orders","volume":"30","author":"Wright","year":"2020","journal-title":"Curr. Biol."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0165","doi-asserted-by":"crossref","first-page":"339","DOI":"10.1016\/j.sleep.2020.05.021","article-title":"Perceived stress and sleep quality among the non-diseased general public in China during the 2019 coronavirus disease: a moderated mediation model","volume":"77","author":"Zhao","year":"2020","journal-title":"Sleep Med."},{"key":"10.1016\/j.ijpsycho.2021.07.001_bb0155","series-title":"Weekly epidemiological update - 16 February 2021","article-title":"Coronavirus Disease 2019 (COVID-19)","author":"World Health Organization","year":"2021"}],"container-title":["International Journal of Psychophysiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0167876021002075?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0167876021002075?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,29]],"date-time":"2025-09-29T06:52:23Z","timestamp":1759128743000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0167876021002075"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,9]]},"references-count":33,"alternative-id":["S0167876021002075"],"URL":"https:\/\/doi.org\/10.1016\/j.ijpsycho.2021.07.001","relation":{},"ISSN":["0167-8760"],"issn-type":[{"value":"0167-8760","type":"print"}],"subject":[],"published":{"date-parts":[[2021,9]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"The effect of COVID-19 lockdowns on sleep time perception: Comparing actigraphy and sleep diary measures","name":"articletitle","label":"Article Title"},{"value":"International Journal of Psychophysiology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ijpsycho.2021.07.001","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2021 Elsevier B.V. All rights reserved.","name":"copyright","label":"Copyright"}]}}