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In addition, narcoleptics could not provide a determination of sleep latency or differentiate sleep-wake states on nearly 23% of all trials. Ratings on a subjective sleepiness scale did not covary with objective sleep latency for any hypersomniac. The findings suggested that patients with either sleep apnea or narcolepsy had difficulty differentiating sleep and quiet wakefulness during the day.<\/jats:p>","DOI":"10.2466\/pms.1988.66.2.463","type":"journal-article","created":{"date-parts":[[2011,8,31]],"date-time":"2011-08-31T20:39:31Z","timestamp":1314823171000},"page":"463-470","source":"Crossref","is-referenced-by-count":13,"title":["Hypersomnia and the Perception of Sleep-Wake States: Some Preliminary Findings"],"prefix":"10.1177","volume":"66","author":[{"given":"Carl P.","family":"Browman","sequence":"first","affiliation":[{"name":"Humana Hospital-Audubon"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Merrill M.","family":"Mitler","sequence":"additional","affiliation":[{"name":"Scripps Clinic and Research Foundation"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[1988,4,1]]},"reference":[{"key":"bibr1-pms.1988.66.2.463","first-page":"5","volume":"2","author":"Association of Sleep Disorders Centers","year":"1979","journal-title":"Sleep"},{"key":"bibr2-pms.1988.66.2.463","doi-asserted-by":"publisher","DOI":"10.1001\/archpsyc.1971.01750120064011"},{"key":"bibr3-pms.1988.66.2.463","first-page":"101","volume":"7","author":"Broughton R. 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