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Sleep macro\u2010 and micro\u2010 (i.e. cyclic alternating pattern, <jats:styled-content style=\"fixed-case\">CAP<\/jats:styled-content>) structure as well as quantitative analysis of <jats:styled-content style=\"fixed-case\">EEG<\/jats:styled-content>, of periodic leg movements during sleep (<jats:styled-content style=\"fixed-case\">PLMS<\/jats:styled-content>), and of muscle tone during <jats:styled-content style=\"fixed-case\">REM<\/jats:styled-content> sleep were compared across groups. <jats:styled-content style=\"fixed-case\">IH<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">NC<\/jats:styled-content> patients slept more than <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content> subjects, but <jats:styled-content style=\"fixed-case\">IH<\/jats:styled-content> showed the highest levels of sleep fragmentation (e.g. awakenings), associated with a <jats:styled-content style=\"fixed-case\">CAP<\/jats:styled-content> rate higher than <jats:styled-content style=\"fixed-case\">NC<\/jats:styled-content> during lighter sleep stages and lower than <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content> during slow wave sleep respectively, and with the highest relative amount of <jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>3 and the lowest of <jats:styled-content style=\"fixed-case\">A<\/jats:styled-content>1 subtypes. <jats:styled-content style=\"fixed-case\">IH<\/jats:styled-content> showed a delta power in between <jats:styled-content style=\"fixed-case\">C<\/jats:styled-content> and <jats:styled-content style=\"fixed-case\">NC<\/jats:styled-content> groups, whereas muscle tone and <jats:styled-content style=\"fixed-case\">PLMS<\/jats:styled-content> had normal characteristics. <jats:styled-content style=\"fixed-case\">A<\/jats:styled-content> peculiar profile of microstructural sleep abnormalities may contribute to sleep fragmentation and, possibly, <jats:styled-content style=\"fixed-case\">EDS<\/jats:styled-content> in <jats:styled-content style=\"fixed-case\">IH<\/jats:styled-content>.<\/jats:p>","DOI":"10.1111\/j.1365-2869.2012.01061.x","type":"journal-article","created":{"date-parts":[[2012,10,15]],"date-time":"2012-10-15T07:37:05Z","timestamp":1350286625000},"page":"185-196","source":"Crossref","is-referenced-by-count":46,"title":["Polysomnographic study of nocturnal sleep in idiopathic hypersomnia without long sleep time"],"prefix":"10.1111","volume":"22","author":[{"given":"Fabio","family":"Pizza","sequence":"first","affiliation":[{"name":"Department of Neurological Sciences University of Bologna\/IRCCS Istituto delle Scienze Neurologiche Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raffaele","family":"Ferri","sequence":"additional","affiliation":[{"name":"Department of Neurology Oasi Institute IRCCS Troina Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francesca","family":"Poli","sequence":"additional","affiliation":[{"name":"Department of Neurological Sciences University of Bologna\/IRCCS Istituto delle Scienze Neurologiche Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefano","family":"Vandi","sequence":"additional","affiliation":[{"name":"Department of Neurological Sciences University of Bologna\/IRCCS Istituto delle Scienze Neurologiche Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Filomena I. 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