{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,22]],"date-time":"2026-04-22T12:19:44Z","timestamp":1776860384477,"version":"3.51.2"},"reference-count":36,"publisher":"Oxford University Press (OUP)","issue":"10","license":[{"start":{"date-parts":[[2025,5,30]],"date-time":"2025-05-30T00:00:00Z","timestamp":1748563200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,10,13]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Study Objectives<\/jats:title>\n                  <jats:p>To investigate sleep perception during a 32-h continuous bedrest polysomnography in patients with idiopathic hypersomnia (IH), nonspecified hypersomnia (NSH) and healthy controls (HC).<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Methods<\/jats:title>\n                  <jats:p>Patients with suspected IH, and HC (n\u2005=\u200514) underwent a regular polysomnography, a modified multiple sleep latency test (MSLT) and a 32-hour bedrest protocol, from 11PM till 7AM the day after, without circadian synchronizers. Patients were diagnosed with IH with long-sleep-time (IH-LST, n\u2005=\u200572) if they had a positive bedrest (sleep duration\u2005\u2265\u200519h), without LST (IH-nLST, n\u2005=\u200510, sleep duration\u2005&amp;lt;\u200519h, MSLT mean sleep latency\u2005\u2264\u20058min), or NSH otherwise (n\u2005=\u200526). Afterward participants estimated their sleep periods over the 32 hours. Relative errors were computed from perceived and objective sleep durations, compared across groups and analyzed in relation to clinical and sleep parameters.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Results<\/jats:title>\n                  <jats:p>NSH and IH-nLST showed higher relative errors compared to IH-LST and HC, during the whole bedrest (median error respectively 33.9%, 22.8%, 2.4%, 5.9%, p\u2005&amp;lt;\u2005.01), and specifically during daytime (7AM to 11PM, p\u2005&amp;lt;\u2005.01) and the second night (11PM to 7AM, p\u2005&amp;lt;\u2005.01). A linear negative association of relative error was found with objective sleep duration, shorter sleepers overestimating more their sleep duration, with a steeper covariance in NSH and IH-nLST (p\u2005&amp;lt;\u2005.01). Adjusted on objective sleep duration, sleep overestimation was associated with subjective and objective daytime sleepiness, and increased number of sleep bouts.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusions<\/jats:title>\n                  <jats:p>Overestimation of sleep duration is frequent in patients with hypersomnolence during a free-running PSG, especially in IH-nLST and particularly severe in NSH. This is a first step towards understanding the mismatch between subjective complaints and objective measures in these patients.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/sleep\/zsaf131","type":"journal-article","created":{"date-parts":[[2025,5,29]],"date-time":"2025-05-29T23:47:42Z","timestamp":1748562462000},"source":"Crossref","is-referenced-by-count":6,"title":["Sleep overestimation differentiates between participants with suspected idiopathic hypersomnia"],"prefix":"10.1093","volume":"48","author":[{"given":"Tugdual","family":"Adam","sequence":"first","affiliation":[{"name":"Institute of Neurosciences of Montpellier, University of Montpellier, INSERM , Montpellier ,","place":["France"]},{"name":"Sleep-Wake Disorders Unit, Department of Neurology, Gui-de-Chauliac Hospital, CHU Montpellier , Montpellier ,","place":["France"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9545-4958","authenticated-orcid":false,"given":"Sofiene","family":"Chenini","sequence":"additional","affiliation":[{"name":"Sleep-Wake Disorders Unit, Department of Neurology, Gui-de-Chauliac Hospital, CHU Montpellier , Montpellier ,","place":["France"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandre","family":"Derr\u00e9","sequence":"additional","affiliation":[{"name":"Sleep-Wake Disorders Unit, Department of Neurology, Gui-de-Chauliac Hospital, CHU Montpellier , Montpellier ,","place":["France"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6620-5127","authenticated-orcid":false,"given":"Lucie","family":"Barateau","sequence":"additional","affiliation":[{"name":"Institute of Neurosciences of Montpellier, University of Montpellier, INSERM , Montpellier ,","place":["France"]},{"name":"Sleep-Wake Disorders Unit, Department of Neurology, Gui-de-Chauliac Hospital, CHU Montpellier , Montpellier ,","place":["France"]},{"name":"National Reference Centre for Orphan Diseases, Narcolepsy, Idiopathic Hypersomnia, and Kleine-Levin Syndrome , Montpellier ,","place":["France"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0683-6506","authenticated-orcid":false,"given":"Yves","family":"Dauvilliers","sequence":"additional","affiliation":[{"name":"Institute of Neurosciences of Montpellier, University of Montpellier, INSERM , Montpellier ,","place":["France"]},{"name":"Sleep-Wake Disorders Unit, Department of Neurology, Gui-de-Chauliac Hospital, CHU Montpellier , Montpellier ,","place":["France"]},{"name":"National Reference Centre for Orphan Diseases, Narcolepsy, Idiopathic Hypersomnia, and Kleine-Levin Syndrome , Montpellier ,","place":["France"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2025,5,30]]},"reference":[{"issue":"4","key":"2025101223472072200_CIT0001","doi-asserted-by":"publisher","first-page":"1921","DOI":"10.1007\/s11325-021-02543-5","article-title":"Factors associated with sleep state misperception in patients with obstructive sleep apnea","volume":"26","author":"Lee","year":"2022","journal-title":"Sleep Breath"},{"issue":"11","key":"2025101223472072200_CIT0002","doi-asserted-by":"publisher","first-page":"1517","DOI":"10.5664\/jcsm.6280","article-title":"Sleep misperception in chronic insomnia patients with obstructive sleep apnea syndrome: implications for clinical assessment","volume":"12","author":"Choi","year":"2016","journal-title":"J Clin Sleep Med"},{"issue":"1","key":"2025101223472072200_CIT0003","doi-asserted-by":"publisher","first-page":"88","DOI":"10.1097\/PSY.0b013e3181fe365a","article-title":"Sleep misperception and chronic insomnia in the general population: role of objective sleep duration and psychological profiles","volume":"73","author":"Fernandez-Mendoza","year":"2011","journal-title":"Psychosom Med."},{"key":"2025101223472072200_CIT0004","doi-asserted-by":"publisher","first-page":"96","DOI":"10.1016\/j.sleep.2021.10.023","article-title":"Sleep-wake misperception. A comprehensive analysis of a large sleep lab cohort","volume":"88","author":"Valko","year":"2021","journal-title":"Sleep Med."},{"key":"2025101223472072200_CIT0005","doi-asserted-by":"publisher","first-page":"196","DOI":"10.1016\/j.smrv.2018.01.002","article-title":"Paradoxical insomnia and subjective-objective sleep discrepancy: a review","volume":"40","author":"Rezaie","year":"2018","journal-title":"Sleep Med Rev."},{"issue":"3","key":"2025101223472072200_CIT0006","doi-asserted-by":"publisher","first-page":"265","DOI":"10.1093\/sleep\/11.3.265","article-title":"Perception of waking and sleeping: possible implications for the evaluation of insomnia","volume":"11","author":"Knab","year":"1988","journal-title":"Sleep."},{"issue":"5","key":"2025101223472072200_CIT0007","doi-asserted-by":"publisher","first-page":"615","DOI":"10.1001\/archpsyc.1976.01770050067011","article-title":"Recorded and reported sleep in chronic primary insomnia","volume":"33","author":"Frankel","year":"1976","journal-title":"Arch Gen Psychiatry."},{"issue":"12","key":"2025101223472072200_CIT0008","doi-asserted-by":"publisher","first-page":"1382","DOI":"10.1176\/ajp.133.12.1382","article-title":"Self-reports versus sleep laboratory findings in 122 drug-free subjects with complaints of chronic insomnia","volume":"133","author":"Carskadon","year":"1976","journal-title":"Am J Psychiatry."},{"key":"2025101223472072200_CIT0009","doi-asserted-by":"publisher","first-page":"120782","DOI":"10.1016\/j.neuroimage.2024.120782","article-title":"Decreased Delta\/Beta ratio index as the sleep state-independent electrophysiological signature of sleep state misperception in Insomnia disorder: a focus on the sleep onset and the whole night","volume":"298","author":"Fasiello","year":"2024","journal-title":"Neuroimage."},{"key":"2025101223472072200_CIT0010","author":"AASM: American Academy of Sleep Medicine","year":"2023","journal-title":"ICSD-3 TR: International Classification of Sleep Disorders"},{"issue":"3","key":"2025101223472072200_CIT0011","doi-asserted-by":"publisher","first-page":"203","DOI":"10.1053\/smrv.2002.0253","article-title":"Subtyping primary insomnia: is sleep state misperception a distinct clinical entity","volume":"7","author":"Edinger","year":"2003","journal-title":"Sleep Med Rev."},{"issue":"1","key":"2025101223472072200_CIT0012","doi-asserted-by":"publisher","first-page":"71","DOI":"10.1093\/SLEEP\/23.1.1D","article-title":"Sleep latency and duration estimates among sleep disorder patients: variability as a function of sleep disorder diagnosis, sleep history, and psychological characteristics","volume":"23","author":"Vanable","year":"2000","journal-title":"Sleep."},{"issue":"2","key":"2025101223472072200_CIT0013","doi-asserted-by":"publisher","first-page":"111","DOI":"10.1016\/j.sleep.2006.08.013","article-title":"Positive sleep state misperception - a new concept of sleep misperception","volume":"8","author":"Trajanovic","year":"2007","journal-title":"Sleep Med."},{"issue":"1","key":"2025101223472072200_CIT0014","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1093\/SLEEPADVANCES\/ZPAC043","article-title":"Sex differences in perceptions of sleep inertia following nighttime awakenings","volume":"4","author":"Hilditch","year":"2023","journal-title":"Sleep Adv"},{"issue":"2","key":"2025101223472072200_CIT0015","doi-asserted-by":"publisher","first-page":"463","DOI":"10.2466\/pms.1988.66.2.463","article-title":"Hypersomnia and the perception of sleep-wake states: some preliminary findings","volume":"66","author":"Browman","year":"1988","journal-title":"Percept Mot Skills."},{"issue":"5","key":"2025101223472072200_CIT0016","doi-asserted-by":"publisher","first-page":"917","DOI":"10.5664\/JCSM.9086","article-title":"The (mis)perception of sleep: factors influencing the discrepancy between self-reported and objective sleep parameters","volume":"17","author":"Trimmel","year":"2021","journal-title":"J Clin Sleep Med."},{"key":"2025101223472072200_CIT0017","doi-asserted-by":"publisher","first-page":"e45","DOI":"10.1016\/j.sleep.2013.11.071","article-title":"What is idiopathic hypersomnia without long sleep? rethinking the definitions by sleep wake diary data","volume":"14","author":"Rodenbeck","year":"2013","journal-title":"Sleep Med."},{"issue":"4","key":"2025101223472072200_CIT0018","doi-asserted-by":"publisher","first-page":"253","DOI":"10.1007\/s11818-010-0491-8","article-title":"Perception of sleep: Subjective vs. objective sleep parameters in patients with insomnia, hypersomnia, parasomnia, and sleep-related movement disorders","volume":"14","author":"Reess","year":"2010","journal-title":"Somnologie."},{"issue":"6","key":"2025101223472072200_CIT0019","doi-asserted-by":"publisher","first-page":"540","DOI":"10.1093\/SLEEP\/14.6.540","article-title":"new method for measuring daytime sleepiness: the Epworth sleepiness scale","volume":"14","author":"Johns","year":"1991","journal-title":"Sleep."},{"issue":"2","key":"2025101223472072200_CIT0020","doi-asserted-by":"publisher","first-page":"617","DOI":"10.5664\/jcsm.9682","article-title":"Idiopathic Hypersomnia Severity Scale to better quantify symptoms severity and their consequences in idiopathic hypersomnia","volume":"18","author":"Rassu","year":"2022","journal-title":"J Clin Sleep Med."},{"issue":"3","key":"2025101223472072200_CIT0021","doi-asserted-by":"publisher","first-page":"588","DOI":"10.1207\/s15327752jpa6703_13","article-title":"Comparison of Beck Depression Inventories -IA and -II in psychiatric outpatients","volume":"67","author":"Beck","year":"1996","journal-title":"J Pers Assess."},{"issue":"2","key":"2025101223472072200_CIT0022","first-page":"97","article-title":"A self-assessment questionnaire to determine morningness-eveningness in human circadian rhythms","volume":"4","author":"Horne","year":"1976","journal-title":"Int J Chronobiol"},{"issue":"2","key":"2025101223472072200_CIT0023","doi-asserted-by":"publisher","first-page":"147","DOI":"10.1016\/0022-3999(93)90081-p","article-title":"Development of a fatigue scale","volume":"37","author":"Chalder","year":"1993","journal-title":"J Psychosom Res."},{"issue":"2","key":"2025101223472072200_CIT0024","doi-asserted-by":"publisher","first-page":"235","DOI":"10.1002\/ana.25141","article-title":"Alternative diagnostic criteria for idiopathic hypersomnia: a 32-hour protocol","volume":"83","author":"Evangelista","year":"2018","journal-title":"Ann Neurol."},{"issue":"5","key":"2025101223472072200_CIT0025","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/zsaa264","article-title":"Characteristics associated with hypersomnia and excessive daytime sleepiness identified by extended polysomnography recording","volume":"44","author":"Evangelista","year":"2021","journal-title":"Sleep."},{"issue":"3","key":"2025101223472072200_CIT0026","doi-asserted-by":"publisher","first-page":"478","DOI":"10.1111\/j.1365-2869.2009.00801.x","article-title":"Measuring the error in sleep estimation in normal subjects and in patients with insomnia","volume":"19","author":"Manconi","year":"2010","journal-title":"J Sleep Res."},{"key":"2025101223472072200_CIT0027","author":"The MathWorks Inc","year":"2021"},{"issue":"1","key":"2025101223472072200_CIT0028","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/zsab220","article-title":"Sleep inertia measurement with the psychomotor vigilance task in idiopathic hypersomnia","volume":"45","author":"Evangelista","year":"2022","journal-title":"Sleep."},{"issue":"7","key":"2025101223472072200_CIT0029","doi-asserted-by":"publisher","DOI":"10.1093\/sleep\/zsab012","article-title":"Cerebrospinal fluid monoamine levels in central disorders of hypersomnolence","volume":"44","author":"Barateau","year":"2021","journal-title":"Sleep."},{"key":"2025101223472072200_CIT0030","doi-asserted-by":"publisher","first-page":"1273","DOI":"10.2147\/NSS.S366774","article-title":"A Study of Factors Causing Sleep State Misperception in Patients with Depression","volume":"14","author":"Kawai","year":"2022","journal-title":"Nat Sci Sleep"},{"issue":"3","key":"2025101223472072200_CIT0031","doi-asserted-by":"publisher","first-page":"259","DOI":"10.1046\/j.1440-1819.2003.01114.x","article-title":"Discrepancy between subjective and objective sleep in patients with depression","volume":"57","author":"Tsuchiyama","year":"2003","journal-title":"Psychiatry Clin Neurosci."},{"issue":"1","key":"2025101223472072200_CIT0032","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1186\/1741-7015-11-78","article-title":"Hypersomnia and depressive symptoms: Methodological and clinical aspects","volume":"11","author":"Dauvilliers","year":"2013","journal-title":"BMC Med."},{"key":"2025101223472072200_CIT0033","doi-asserted-by":"publisher","first-page":"76","DOI":"10.1016\/j.smrv.2016.08.005","article-title":"Waking up is the hardest thing I do all day: Sleep inertia and sleep drunkenness","volume":"35","author":"Trotti","year":"2017","journal-title":"Sleep Med Rev."},{"key":"2025101223472072200_CIT0034","doi-asserted-by":"publisher","first-page":"461231","DOI":"10.3389\/fnins.2019.01086","article-title":"Sleepiness as a Local Phenomenon","volume":"13","author":"D\u2019Ambrosio","year":"2019","journal-title":"Front Neurosci."},{"issue":"6","key":"2025101223472072200_CIT0035","doi-asserted-by":"publisher","first-page":"e14028","DOI":"10.1111\/jsr.14028","article-title":"Reconsidering sleep perception in insomnia: from misperception to mismeasurement","volume":"32","author":"Stephan","year":"2023","journal-title":"J Sleep Res."},{"key":"2025101223472072200_CIT0036","doi-asserted-by":"publisher","first-page":"e70007","DOI":"10.1111\/jsr.70007","article-title":"Actigraphy against 32-hour polysomnography in patients with suspected idiopathic hypersomnia","author":"Adam","year":"2025","journal-title":"J Sleep Res."}],"container-title":["SLEEP"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/sleep\/advance-article-pdf\/doi\/10.1093\/sleep\/zsaf131\/63401516\/zsaf131.pdf","content-type":"application\/pdf","content-version":"am","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/sleep\/article-pdf\/48\/10\/zsaf131\/63401516\/zsaf131.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/sleep\/article-pdf\/48\/10\/zsaf131\/63401516\/zsaf131.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T03:47:31Z","timestamp":1760327251000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/sleep\/article\/doi\/10.1093\/sleep\/zsaf131\/8153066"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,5,30]]},"references-count":36,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2025,5,30]]},"published-print":{"date-parts":[[2025,10,13]]}},"URL":"https:\/\/doi.org\/10.1093\/sleep\/zsaf131","relation":{},"ISSN":["0161-8105","1550-9109"],"issn-type":[{"value":"0161-8105","type":"print"},{"value":"1550-9109","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2025,10]]},"published":{"date-parts":[[2025,5,30]]},"article-number":"zsaf131"}}