PMID: 11903857Mar 21, 2002Paper

Active processing of declarative knowledge during REM-sleep dreaming

Journal of Sleep Research
C CipolliIgino Fagioli

Abstract

The ability to process recently acquired knowledge is clearly maintained during sleep. Here we assess whether and how far the sleeper controls this processing (in a non-volitional and non-conscious manner). We posit that during sleep, the cognitive concerns of previous waking may guide access to, and processing of, items of declarative knowledge with which those concerns are associated. In a delayed recall task, before each of three sleep onsets in the same night, 12 subjects heard a different nonsense sentence. When awakened in rapid eye movement (REM) sleep, they were asked to report their dream experience and to recall the last sentence heard. Occurrences of incorporation into dream content were more frequent for this sentence than for the sentences heard before previous sleep onsets, and also more frequent than occurrences of similar contents in reports from a control night. However, the modalities of elaboration of dream contents did not vary. These findings indicate that cognitive concern can affect the accessing of recently acquired declarative knowledge during sleep, but not the modalities by which this is inserted into dream content. They also suggest that cognitive concern may help consolidate knowledge by increasing ...Continue Reading

Citations

Aug 30, 2008·Brain Research Bulletin·Carlo CipolliGiuseppe Plazzi
Jul 13, 2004·Brain Research Bulletin·Carlo CipolliLuigi Murri
Nov 23, 2006·Brain Research Bulletin·Michela MazzettiCarlo Cipolli
Jan 18, 2003·Sleep Medicine Reviews·Igino Fagioli

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