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| Research article summary (published 30 Dec 2002): |
Dreaming and episodic memory: a functional dissociation?
Full Abstract
The activity that takes place in memory systems during sleep is likely to be related to the role of sleep in memory consolidation and learning, as well as to the generation of dream hallucinations. This study addressed the often-stated hypothesis that replay of whole episodic memories contributes to the multimodal hallucinations of sleep. Over a period of 14 days, 29 subjects kept a log of daytime activities, events, and concerns, wrote down any recalled dreams, and scored the dreams for incorporation of any waking experiences. While 65% of a total of 299 sleep mentation reports were judged to reflect aspects of recent waking life experiences, the episodic replay of waking events was found in no more than 1-2% of the dream reports. This finding has implications for understanding the unique memory processing that takes place during the night and is consistent with evidence that sleep has no role in episodic memory consolidation.
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Author information
Author/s: Fosse, Magdalena J (MJ); Fosse, Roar (R); Hobson, J Allan (JA); Stickgold, Robert J (RJ);
Affiliation: Laboratory of Neurophysiology, Harvard Medical School, Massachusetts Mental Health Center, Boston 02115, USA. rfosse(-atsign-)hms.harvard.edu
Journal and publication information
Publication Type: Comparative Study; Journal Article
Journal: Journal of cognitive neuroscience (J Cogn Neurosci), published in United States. (Language: eng)
Reference: 2003-Jan; vol 15 (issue 1) : pp 1-9
Dates: Created 2003/02/19; Completed 2003/03/26; Revised 2006/11/15;
PMID: 12590838, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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