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However, a review of the descriptive studies shows that care has not generally been taken either to restrict or objectively measure daytime sleep. Evidence is presented suggesting that daytime sleep may occur in depressed patients more frequently than commonly thought and that, in normal subjects, daytime napping can result in nocturnal sleep changes similar to those seen in depressed patients. A model is proposed in which the nocturnal sleep disturbance in depression reflects the occurrence, during the daytime, of frank slow wave sleep or periods of larqe amplitude, slow wave EEG activity as a consequence of a dampening of the circadian rhythm of sleep propensity.<\/jats:p>","DOI":"10.1177\/070674379103600510","type":"journal-article","created":{"date-parts":[[2017,4,26]],"date-time":"2017-04-26T04:13:47Z","timestamp":1493180027000},"page":"366-373","source":"Crossref","is-referenced-by-count":12,"title":["Sleep Disturbance in Depression Reconsidered"],"prefix":"10.1177","volume":"36","author":[{"given":"Stephen E.","family":"Southmayd","sequence":"first","affiliation":[{"name":"Department of Psychiatry, Queen's University, Kingston, Ontario."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James","family":"Cairns","sequence":"additional","affiliation":[{"name":"Treatment Evaluation Unit, Kingston Psychiatric Hospital, Kingston, 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