Sleep-related hippocampo-cortical interplay during emotional memory recollection.

Emotional events are usually better remembered than neutral ones. This effect is mediated in part by a modulation of the hippocampus by the amygdala. Sleep plays a role in the consolidation of declarative memory. We examined the impact of sleep and lack of sleep on the consolidation of emotional (ne...

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Autores principales:	Virginie Sterpenich, Geneviève Albouy, Mélanie Boly, Gilles Vandewalle, Annabelle Darsaud, Evelyne Balteau, Thien Thanh Dang-Vu, Martin Desseilles, Arnaud D'Argembeau, Steffen Gais, Géraldine Rauchs, Manuel Schabus, Christian Degueldre, André Luxen, Fabienne Collette, Pierre Maquet
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2007
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/978fe15275f841c8ae615e00dfcdcd45
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spelling	oai:doaj.org-article:978fe15275f841c8ae615e00dfcdcd452021-11-25T05:33:06ZSleep-related hippocampo-cortical interplay during emotional memory recollection.1544-91731545-788510.1371/journal.pbio.0050282https://doaj.org/article/978fe15275f841c8ae615e00dfcdcd452007-10-01T00:00:00Zhttps://doi.org/10.1371/journal.pbio.0050282https://doaj.org/toc/1544-9173https://doaj.org/toc/1545-7885Emotional events are usually better remembered than neutral ones. This effect is mediated in part by a modulation of the hippocampus by the amygdala. Sleep plays a role in the consolidation of declarative memory. We examined the impact of sleep and lack of sleep on the consolidation of emotional (negative and positive) memories at the macroscopic systems level. Using functional MRI (fMRI), we compared the neural correlates of successful recollection by humans of emotional and neutral stimuli, 72 h after encoding, with or without total sleep deprivation during the first post-encoding night. In contrast to recollection of neutral and positive stimuli, which was deteriorated by sleep deprivation, similar recollection levels were achieved for negative stimuli in both groups. Successful recollection of emotional stimuli elicited larger responses in the hippocampus and various cortical areas, including the medial prefrontal cortex, in the sleep group than in the sleep deprived group. This effect was consistent across subjects for negative items but depended linearly on individual memory performance for positive items. In addition, the hippocampus and medial prefrontal cortex were functionally more connected during recollection of either negative or positive than neutral items, and more so in sleeping than in sleep-deprived subjects. In the sleep-deprived group, recollection of negative items elicited larger responses in the amygdala and an occipital area than in the sleep group. In contrast, no such difference in brain responses between groups was associated with recollection of positive stimuli. The results suggest that the emotional significance of memories influences their sleep-dependent systems-level consolidation. The recruitment of hippocampo-neocortical networks during recollection is enhanced after sleep and is hindered by sleep deprivation. After sleep deprivation, recollection of negative, potentially dangerous, memories recruits an alternate amygdalo-cortical network, which would keep track of emotional information despite sleep deprivation.Virginie SterpenichGeneviève AlbouyMélanie BolyGilles VandewalleAnnabelle DarsaudEvelyne BalteauThien Thanh Dang-VuMartin DesseillesArnaud D'ArgembeauSteffen GaisGéraldine RauchsManuel SchabusChristian DegueldreAndré LuxenFabienne CollettePierre MaquetPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Biology, Vol 5, Iss 11, p e282 (2007)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Virginie Sterpenich Geneviève Albouy Mélanie Boly Gilles Vandewalle Annabelle Darsaud Evelyne Balteau Thien Thanh Dang-Vu Martin Desseilles Arnaud D'Argembeau Steffen Gais Géraldine Rauchs Manuel Schabus Christian Degueldre André Luxen Fabienne Collette Pierre Maquet Sleep-related hippocampo-cortical interplay during emotional memory recollection.
description	Emotional events are usually better remembered than neutral ones. This effect is mediated in part by a modulation of the hippocampus by the amygdala. Sleep plays a role in the consolidation of declarative memory. We examined the impact of sleep and lack of sleep on the consolidation of emotional (negative and positive) memories at the macroscopic systems level. Using functional MRI (fMRI), we compared the neural correlates of successful recollection by humans of emotional and neutral stimuli, 72 h after encoding, with or without total sleep deprivation during the first post-encoding night. In contrast to recollection of neutral and positive stimuli, which was deteriorated by sleep deprivation, similar recollection levels were achieved for negative stimuli in both groups. Successful recollection of emotional stimuli elicited larger responses in the hippocampus and various cortical areas, including the medial prefrontal cortex, in the sleep group than in the sleep deprived group. This effect was consistent across subjects for negative items but depended linearly on individual memory performance for positive items. In addition, the hippocampus and medial prefrontal cortex were functionally more connected during recollection of either negative or positive than neutral items, and more so in sleeping than in sleep-deprived subjects. In the sleep-deprived group, recollection of negative items elicited larger responses in the amygdala and an occipital area than in the sleep group. In contrast, no such difference in brain responses between groups was associated with recollection of positive stimuli. The results suggest that the emotional significance of memories influences their sleep-dependent systems-level consolidation. The recruitment of hippocampo-neocortical networks during recollection is enhanced after sleep and is hindered by sleep deprivation. After sleep deprivation, recollection of negative, potentially dangerous, memories recruits an alternate amygdalo-cortical network, which would keep track of emotional information despite sleep deprivation.
format	article
author	Virginie Sterpenich Geneviève Albouy Mélanie Boly Gilles Vandewalle Annabelle Darsaud Evelyne Balteau Thien Thanh Dang-Vu Martin Desseilles Arnaud D'Argembeau Steffen Gais Géraldine Rauchs Manuel Schabus Christian Degueldre André Luxen Fabienne Collette Pierre Maquet
author_facet	Virginie Sterpenich Geneviève Albouy Mélanie Boly Gilles Vandewalle Annabelle Darsaud Evelyne Balteau Thien Thanh Dang-Vu Martin Desseilles Arnaud D'Argembeau Steffen Gais Géraldine Rauchs Manuel Schabus Christian Degueldre André Luxen Fabienne Collette Pierre Maquet
author_sort	Virginie Sterpenich
title	Sleep-related hippocampo-cortical interplay during emotional memory recollection.
title_short	Sleep-related hippocampo-cortical interplay during emotional memory recollection.
title_full	Sleep-related hippocampo-cortical interplay during emotional memory recollection.
title_fullStr	Sleep-related hippocampo-cortical interplay during emotional memory recollection.
title_full_unstemmed	Sleep-related hippocampo-cortical interplay during emotional memory recollection.
title_sort	sleep-related hippocampo-cortical interplay during emotional memory recollection.
publisher	Public Library of Science (PLoS)
publishDate	2007
url	https://doaj.org/article/978fe15275f841c8ae615e00dfcdcd45
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Sleep-related hippocampo-cortical interplay during emotional memory recollection.

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