{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T19:00:24Z","timestamp":1790622024746,"version":"4.1.0"},"reference-count":72,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,8,16]],"date-time":"2026-08-16T00:00:00Z","timestamp":1786838400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,16]],"date-time":"2026-08-16T00:00:00Z","timestamp":1786838400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001804","name":"Canada Research Chairs","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001804","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Sleep Research"],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Although many studies have reported the presence of daytime sleepiness in Parkinson's disease (PD), either a weak or no association has been found between self\u2010reported and current objective measures of daytime sleepiness in this population. Changes in resting state quantitative electroencephalography (qEEG) have been associated with increased subjective sleepiness induced by sleep deprivation in young and older adults. The aim of this study was to investigate the relationship between resting state qEEG and self\u2010reported daytime sleepiness in adults with PD. Sixty\u2010two participants with PD underwent polysomnographic recording and clinical assessment. Daytime sleepiness severity was measured with the Epworth Sleepiness Scale (ESS). Resting state EEG was recorded 30\u2009min after awakening. Spectral power and functional connectivity analyses (weighted\u2010phase lag index, amplitude\u2013amplitude coupling) were performed on artefact\u2010free resting state EEG in 2\u2009Hz mini bands from 0.5 to 12\u2009Hz. Partial correlations and a hierarchical regression were used to evaluate the relationship between the qEEG metrics and ESS scores. Lower phase synchronisation in the low alpha band (8\u201310\u2009Hz) within the occipital cortex was the best EEG predictor of higher daytime sleepiness severity in PD. Our results are in line with some findings of previous studies conducted in healthy young participants that reported lower alpha connectivity after sleep deprivation, suggesting disrupted arousal networks may contribute to daytime sleepiness in PD. Lower alpha phase synchronisation within the occipital cortex could serve as a proxy for daytime sleepiness in PD.<\/jats:p>","DOI":"10.1111\/jsr.70408","type":"journal-article","created":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T04:07:26Z","timestamp":1786939646000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Relationship Between Resting State Quantitative\n                    <scp>EEG<\/scp>\n                    and Daytime Sleepiness Complaints in Parkinson's Disease"],"prefix":"10.1111","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6158-7755","authenticated-orcid":false,"given":"Tha\u00efna","family":"Rosinvil","sequence":"first","affiliation":[{"name":"Center for Advanced Research in Sleep Medicine Centre de Recherche du CIUSSS\u2010N\u00ceM  Montreal Quebec Canada"},{"name":"Department of Psychology Universit\u00e9 de Montr\u00e9al  Montreal Quebec 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