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The influence of encoding strategy on associative memory consolidation across wake and sleep

Sleep benefits memory consolidation. However, factors present at initial encoding may moderate this effect. Here, we examined the role that encoding strategy plays in subsequent memory consolidation during sleep. Eighty-nine participants encoded pairs of words using two different strategies. Each pa...

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Autores principales: Denis, Dan, Bottary, Ryan, Cunningham, Tony J., Tcheukado, Mario-Cyriac, Payne, Jessica D.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cold Spring Harbor Laboratory Press 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10547373/
https://www.ncbi.nlm.nih.gov/pubmed/37726141
http://dx.doi.org/10.1101/lm.053765.123
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author Denis, Dan
Bottary, Ryan
Cunningham, Tony J.
Tcheukado, Mario-Cyriac
Payne, Jessica D.
author_facet Denis, Dan
Bottary, Ryan
Cunningham, Tony J.
Tcheukado, Mario-Cyriac
Payne, Jessica D.
author_sort Denis, Dan
collection PubMed
description Sleep benefits memory consolidation. However, factors present at initial encoding may moderate this effect. Here, we examined the role that encoding strategy plays in subsequent memory consolidation during sleep. Eighty-nine participants encoded pairs of words using two different strategies. Each participant encoded half of the word pairs using an integrative visualization technique, where the two items were imagined in an integrated scene. The other half were encoded nonintegratively, with each word pair item visualized separately. Memory was tested before and after a period of nocturnal sleep (N = 47) or daytime wake (N = 42) via cued recall tests. Immediate memory performance was significantly better for word pairs encoded using the integrative strategy compared with the nonintegrative strategy (P < 0.001). When looking at the change in recall across the delay, there was significantly less forgetting of integrated word pairs across a night of sleep compared with a day spent awake (P < 0.001), with no significant difference in the nonintegrated pairs (P = 0.19). This finding was driven by more forgetting of integrated compared with not-integrated pairs across the wake delay (P < 0.001), whereas forgetting was equivalent across the sleep delay (P = 0.26). Together, these results show that the strategy engaged in during encoding impacts both the immediate retention of memories and their subsequent consolidation across sleep and wake intervals.
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spelling pubmed-105473732023-10-04 The influence of encoding strategy on associative memory consolidation across wake and sleep Denis, Dan Bottary, Ryan Cunningham, Tony J. Tcheukado, Mario-Cyriac Payne, Jessica D. Learn Mem Research Paper Sleep benefits memory consolidation. However, factors present at initial encoding may moderate this effect. Here, we examined the role that encoding strategy plays in subsequent memory consolidation during sleep. Eighty-nine participants encoded pairs of words using two different strategies. Each participant encoded half of the word pairs using an integrative visualization technique, where the two items were imagined in an integrated scene. The other half were encoded nonintegratively, with each word pair item visualized separately. Memory was tested before and after a period of nocturnal sleep (N = 47) or daytime wake (N = 42) via cued recall tests. Immediate memory performance was significantly better for word pairs encoded using the integrative strategy compared with the nonintegrative strategy (P < 0.001). When looking at the change in recall across the delay, there was significantly less forgetting of integrated word pairs across a night of sleep compared with a day spent awake (P < 0.001), with no significant difference in the nonintegrated pairs (P = 0.19). This finding was driven by more forgetting of integrated compared with not-integrated pairs across the wake delay (P < 0.001), whereas forgetting was equivalent across the sleep delay (P = 0.26). Together, these results show that the strategy engaged in during encoding impacts both the immediate retention of memories and their subsequent consolidation across sleep and wake intervals. Cold Spring Harbor Laboratory Press 2023-09 /pmc/articles/PMC10547373/ /pubmed/37726141 http://dx.doi.org/10.1101/lm.053765.123 Text en © 2023 Denis et al.; Published by Cold Spring Harbor Laboratory Press https://creativecommons.org/licenses/by/4.0/This article, published in Learning & Memory, is available under a Creative Commons License (Attribution 4.0 International), as described at http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Research Paper
Denis, Dan
Bottary, Ryan
Cunningham, Tony J.
Tcheukado, Mario-Cyriac
Payne, Jessica D.
The influence of encoding strategy on associative memory consolidation across wake and sleep
title The influence of encoding strategy on associative memory consolidation across wake and sleep
title_full The influence of encoding strategy on associative memory consolidation across wake and sleep
title_fullStr The influence of encoding strategy on associative memory consolidation across wake and sleep
title_full_unstemmed The influence of encoding strategy on associative memory consolidation across wake and sleep
title_short The influence of encoding strategy on associative memory consolidation across wake and sleep
title_sort influence of encoding strategy on associative memory consolidation across wake and sleep
topic Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10547373/
https://www.ncbi.nlm.nih.gov/pubmed/37726141
http://dx.doi.org/10.1101/lm.053765.123
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