Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.

Motor sequence learning is known to rely on more than a single process. As the skill develops with practice, two different representations of the sequence are formed: a goal representation built under spatial allocentric coordinates and a movement representation mediated through egocentric motor coo...

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Autores principales:	Geneviève Albouy, Stuart Fogel, Hugo Pottiez, Vo An Nguyen, Laura Ray, Ovidiu Lungu, Julie Carrier, Edwin Robertson, Julien Doyon
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/06430a25f03b47298b916443346ac631
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id	oai:doaj.org-article:06430a25f03b47298b916443346ac631
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spelling	oai:doaj.org-article:06430a25f03b47298b916443346ac6312021-11-18T08:02:54ZDaytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.1932-620310.1371/journal.pone.0052805https://doaj.org/article/06430a25f03b47298b916443346ac6312013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23300993/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Motor sequence learning is known to rely on more than a single process. As the skill develops with practice, two different representations of the sequence are formed: a goal representation built under spatial allocentric coordinates and a movement representation mediated through egocentric motor coordinates. This study aimed to explore the influence of daytime sleep (nap) on consolidation of these two representations. Through the manipulation of an explicit finger sequence learning task and a transfer protocol, we show that both allocentric (spatial) and egocentric (motor) representations of the sequence can be isolated after initial training. Our results also demonstrate that nap favors the emergence of offline gains in performance for the allocentric, but not the egocentric representation, even after accounting for fatigue effects. Furthermore, sleep-dependent gains in performance observed for the allocentric representation are correlated with spindle density during non-rapid eye movement (NREM) sleep of the post-training nap. In contrast, performance on the egocentric representation is only maintained, but not improved, regardless of the sleep/wake condition. These results suggest that motor sequence memory acquisition and consolidation involve distinct mechanisms that rely on sleep (and specifically, spindle) or simple passage of time, depending respectively on whether the sequence is performed under allocentric or egocentric coordinates.Geneviève AlbouyStuart FogelHugo PottiezVo An NguyenLaura RayOvidiu LunguJulie CarrierEdwin RobertsonJulien DoyonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 1, p e52805 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Geneviève Albouy Stuart Fogel Hugo Pottiez Vo An Nguyen Laura Ray Ovidiu Lungu Julie Carrier Edwin Robertson Julien Doyon Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.
description	Motor sequence learning is known to rely on more than a single process. As the skill develops with practice, two different representations of the sequence are formed: a goal representation built under spatial allocentric coordinates and a movement representation mediated through egocentric motor coordinates. This study aimed to explore the influence of daytime sleep (nap) on consolidation of these two representations. Through the manipulation of an explicit finger sequence learning task and a transfer protocol, we show that both allocentric (spatial) and egocentric (motor) representations of the sequence can be isolated after initial training. Our results also demonstrate that nap favors the emergence of offline gains in performance for the allocentric, but not the egocentric representation, even after accounting for fatigue effects. Furthermore, sleep-dependent gains in performance observed for the allocentric representation are correlated with spindle density during non-rapid eye movement (NREM) sleep of the post-training nap. In contrast, performance on the egocentric representation is only maintained, but not improved, regardless of the sleep/wake condition. These results suggest that motor sequence memory acquisition and consolidation involve distinct mechanisms that rely on sleep (and specifically, spindle) or simple passage of time, depending respectively on whether the sequence is performed under allocentric or egocentric coordinates.
format	article
author	Geneviève Albouy Stuart Fogel Hugo Pottiez Vo An Nguyen Laura Ray Ovidiu Lungu Julie Carrier Edwin Robertson Julien Doyon
author_facet	Geneviève Albouy Stuart Fogel Hugo Pottiez Vo An Nguyen Laura Ray Ovidiu Lungu Julie Carrier Edwin Robertson Julien Doyon
author_sort	Geneviève Albouy
title	Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.
title_short	Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.
title_full	Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.
title_fullStr	Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.
title_full_unstemmed	Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.
title_sort	daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/06430a25f03b47298b916443346ac631
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Daytime sleep enhances consolidation of the spatial but not motoric representation of motor sequence memory.

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