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No Evidence for Memory Decontextualization across One Night of Sleep
Sleep after learning strengthens memory consolidation. According to the active system consolidation hypothesis, sleep supports the integration of newly acquired memories into cortical knowledge networks, presumably accompanied by a process of decontextualization of the memory trace (i.e., a gradual...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4727184/ https://www.ncbi.nlm.nih.gov/pubmed/26858622 http://dx.doi.org/10.3389/fnhum.2016.00007 |
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author | Jurewicz, Katarzyna Cordi, Maren Jasmin Staudigl, Tobias Rasch, Björn |
author_facet | Jurewicz, Katarzyna Cordi, Maren Jasmin Staudigl, Tobias Rasch, Björn |
author_sort | Jurewicz, Katarzyna |
collection | PubMed |
description | Sleep after learning strengthens memory consolidation. According to the active system consolidation hypothesis, sleep supports the integration of newly acquired memories into cortical knowledge networks, presumably accompanied by a process of decontextualization of the memory trace (i.e., a gradual loss of memory for the learning context). However, the availability of contextual information generally facilitates memory recall and studies on the interaction of sleep and context on memory retrieval have revealed inconsistent results. Here, we do not find any evidence for a role of sleep in the decontextualization of newly learned declarative memories. In two separate studies, 104 healthy young adults incidentally learned words associated with a context. After a 12 h retention interval filled with either sleep or wakefulness, recall (Experiment 1) or recognition (Experiment 2) was tested with the same or different context. Overall, memory retrieval was significantly improved when the learning context was reinstated, as compared to a different context. However, this context effect of memory was not modulated by sleep vs. wakefulness. These findings argue against a decontextualization of memories, at least across a single night of sleep. |
format | Online Article Text |
id | pubmed-4727184 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-47271842016-02-08 No Evidence for Memory Decontextualization across One Night of Sleep Jurewicz, Katarzyna Cordi, Maren Jasmin Staudigl, Tobias Rasch, Björn Front Hum Neurosci Neuroscience Sleep after learning strengthens memory consolidation. According to the active system consolidation hypothesis, sleep supports the integration of newly acquired memories into cortical knowledge networks, presumably accompanied by a process of decontextualization of the memory trace (i.e., a gradual loss of memory for the learning context). However, the availability of contextual information generally facilitates memory recall and studies on the interaction of sleep and context on memory retrieval have revealed inconsistent results. Here, we do not find any evidence for a role of sleep in the decontextualization of newly learned declarative memories. In two separate studies, 104 healthy young adults incidentally learned words associated with a context. After a 12 h retention interval filled with either sleep or wakefulness, recall (Experiment 1) or recognition (Experiment 2) was tested with the same or different context. Overall, memory retrieval was significantly improved when the learning context was reinstated, as compared to a different context. However, this context effect of memory was not modulated by sleep vs. wakefulness. These findings argue against a decontextualization of memories, at least across a single night of sleep. Frontiers Media S.A. 2016-01-26 /pmc/articles/PMC4727184/ /pubmed/26858622 http://dx.doi.org/10.3389/fnhum.2016.00007 Text en Copyright © 2016 Jurewicz, Cordi, Staudigl and Rasch. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution and reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Neuroscience Jurewicz, Katarzyna Cordi, Maren Jasmin Staudigl, Tobias Rasch, Björn No Evidence for Memory Decontextualization across One Night of Sleep |
title | No Evidence for Memory Decontextualization across One Night of Sleep |
title_full | No Evidence for Memory Decontextualization across One Night of Sleep |
title_fullStr | No Evidence for Memory Decontextualization across One Night of Sleep |
title_full_unstemmed | No Evidence for Memory Decontextualization across One Night of Sleep |
title_short | No Evidence for Memory Decontextualization across One Night of Sleep |
title_sort | no evidence for memory decontextualization across one night of sleep |
topic | Neuroscience |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4727184/ https://www.ncbi.nlm.nih.gov/pubmed/26858622 http://dx.doi.org/10.3389/fnhum.2016.00007 |
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