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Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories
Any experienced event may be encoded and retained in detail as part of our episodic memory, and may also refer and contribute to our generalized knowledge stored in semantic memory. The beginnings of this declarative memory formation are only poorly understood. Even less is known about the interrela...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7064567/ https://www.ncbi.nlm.nih.gov/pubmed/32157080 http://dx.doi.org/10.1038/s41467-020-14850-8 |
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author | Friedrich, Manuela Mölle, Matthias Friederici, Angela D. Born, Jan |
author_facet | Friedrich, Manuela Mölle, Matthias Friederici, Angela D. Born, Jan |
author_sort | Friedrich, Manuela |
collection | PubMed |
description | Any experienced event may be encoded and retained in detail as part of our episodic memory, and may also refer and contribute to our generalized knowledge stored in semantic memory. The beginnings of this declarative memory formation are only poorly understood. Even less is known about the interrelation between episodic and semantic memory during the earliest developmental stages. Here, we show that the formation of episodic memories in 14- to 17-month-old infants depends on sleep, subsequent to exposure to novel events. Infant brain responses reveal that, after sleep-dependent consolidation, the newly stored events are not processed semantically, although appropriate lexical-semantic memories are present and accessible by similar events that were not experienced before the nap. We propose that temporarily disabled semantic processing protects precise episodic memories from interference with generalized semantic memories. Selectively restricted semantic access could also trigger semantic refinement, and thus, might even improve semantic memory. |
format | Online Article Text |
id | pubmed-7064567 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-70645672020-03-18 Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories Friedrich, Manuela Mölle, Matthias Friederici, Angela D. Born, Jan Nat Commun Article Any experienced event may be encoded and retained in detail as part of our episodic memory, and may also refer and contribute to our generalized knowledge stored in semantic memory. The beginnings of this declarative memory formation are only poorly understood. Even less is known about the interrelation between episodic and semantic memory during the earliest developmental stages. Here, we show that the formation of episodic memories in 14- to 17-month-old infants depends on sleep, subsequent to exposure to novel events. Infant brain responses reveal that, after sleep-dependent consolidation, the newly stored events are not processed semantically, although appropriate lexical-semantic memories are present and accessible by similar events that were not experienced before the nap. We propose that temporarily disabled semantic processing protects precise episodic memories from interference with generalized semantic memories. Selectively restricted semantic access could also trigger semantic refinement, and thus, might even improve semantic memory. Nature Publishing Group UK 2020-03-10 /pmc/articles/PMC7064567/ /pubmed/32157080 http://dx.doi.org/10.1038/s41467-020-14850-8 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Friedrich, Manuela Mölle, Matthias Friederici, Angela D. Born, Jan Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories |
title | Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories |
title_full | Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories |
title_fullStr | Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories |
title_full_unstemmed | Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories |
title_short | Sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories |
title_sort | sleep-dependent memory consolidation in infants protects new episodic memories from existing semantic memories |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7064567/ https://www.ncbi.nlm.nih.gov/pubmed/32157080 http://dx.doi.org/10.1038/s41467-020-14850-8 |
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