Non-linear susceptibility to interferences in declarative memory formation.

After encoding, memories go through a labile state followed by a stabilization process known as consolidation. Once consolidated they can enter a new labile state after the presentation of a reminder of the original memory, followed by a period of re-stabilization (reconsolidation). During these per...

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Main Authors: Malen D Moyano, Giulia Carbonari, Matías Bonilla, María E Pedreira, Luis I Brusco, Laura Kaczer, Cecilia Forcato
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2022-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0270678
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author Malen D Moyano
Giulia Carbonari
Matías Bonilla
María E Pedreira
Luis I Brusco
Laura Kaczer
Cecilia Forcato
author_facet Malen D Moyano
Giulia Carbonari
Matías Bonilla
María E Pedreira
Luis I Brusco
Laura Kaczer
Cecilia Forcato
author_sort Malen D Moyano
collection DOAJ
description After encoding, memories go through a labile state followed by a stabilization process known as consolidation. Once consolidated they can enter a new labile state after the presentation of a reminder of the original memory, followed by a period of re-stabilization (reconsolidation). During these periods of lability the memory traces can be modified. Currently, some studies show a rapid stabilization after 30 min, while others show that stabilization occurs after longer periods (e.g. > 6 h). Here we investigate the effect of an interference treatment on declarative memory consolidation, comparing distinct time intervals after acquisition. On day 1, participants learned a list of non- syllable pairs (List 1). 5 min, 30 min, 3 h or 8 h later, they received an interference list (List 2) that acted as an amnesic agent. On day 2 (48 h after training) participants had to recall List 1 first, followed by List 2. We found that the List 1 memory was susceptible to interference when List 2 was administered 5 min or 3 h after learning but not when it was administered 30 min or 8 h after. We propose the possibility that this rapid memory protection could be induced by a fast and transient neocortical integration. Our results open a discussion about the contribution of molecular and systemic aspects to memory consolidation.
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spelling doaj.art-ae58fdddbcf347fb90665760c23f49312022-12-22T03:00:40ZengPublic Library of Science (PLoS)PLoS ONE1932-62032022-01-01176e027067810.1371/journal.pone.0270678Non-linear susceptibility to interferences in declarative memory formation.Malen D MoyanoGiulia CarbonariMatías BonillaMaría E PedreiraLuis I BruscoLaura KaczerCecilia ForcatoAfter encoding, memories go through a labile state followed by a stabilization process known as consolidation. Once consolidated they can enter a new labile state after the presentation of a reminder of the original memory, followed by a period of re-stabilization (reconsolidation). During these periods of lability the memory traces can be modified. Currently, some studies show a rapid stabilization after 30 min, while others show that stabilization occurs after longer periods (e.g. > 6 h). Here we investigate the effect of an interference treatment on declarative memory consolidation, comparing distinct time intervals after acquisition. On day 1, participants learned a list of non- syllable pairs (List 1). 5 min, 30 min, 3 h or 8 h later, they received an interference list (List 2) that acted as an amnesic agent. On day 2 (48 h after training) participants had to recall List 1 first, followed by List 2. We found that the List 1 memory was susceptible to interference when List 2 was administered 5 min or 3 h after learning but not when it was administered 30 min or 8 h after. We propose the possibility that this rapid memory protection could be induced by a fast and transient neocortical integration. Our results open a discussion about the contribution of molecular and systemic aspects to memory consolidation.https://doi.org/10.1371/journal.pone.0270678
spellingShingle Malen D Moyano
Giulia Carbonari
Matías Bonilla
María E Pedreira
Luis I Brusco
Laura Kaczer
Cecilia Forcato
Non-linear susceptibility to interferences in declarative memory formation.
PLoS ONE
title Non-linear susceptibility to interferences in declarative memory formation.
title_full Non-linear susceptibility to interferences in declarative memory formation.
title_fullStr Non-linear susceptibility to interferences in declarative memory formation.
title_full_unstemmed Non-linear susceptibility to interferences in declarative memory formation.
title_short Non-linear susceptibility to interferences in declarative memory formation.
title_sort non linear susceptibility to interferences in declarative memory formation
url https://doi.org/10.1371/journal.pone.0270678
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