Working memory is partially preserved during sleep.

Although several cognitive processes, including speech processing, have been studied during sleep, working memory (WM) has never been explored up to now. Our study assessed the capacity of WM by testing speech perception when the level of background noise and the sentential semantic length (SSL) (am...

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Autores principales:	Jérôme Daltrozzo, Léa Claude, Barbara Tillmann, Hélène Bastuji, Fabien Perrin
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/84782c663a9d42c890231a5473b83ffb
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id	oai:doaj.org-article:84782c663a9d42c890231a5473b83ffb
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spelling	oai:doaj.org-article:84782c663a9d42c890231a5473b83ffb2021-11-18T08:06:01ZWorking memory is partially preserved during sleep.1932-620310.1371/journal.pone.0050997https://doaj.org/article/84782c663a9d42c890231a5473b83ffb2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23236418/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Although several cognitive processes, including speech processing, have been studied during sleep, working memory (WM) has never been explored up to now. Our study assessed the capacity of WM by testing speech perception when the level of background noise and the sentential semantic length (SSL) (amount of semantic information required to perceive the incongruence of a sentence) were modulated. Speech perception was explored with the N400 component of the event-related potentials recorded to sentence final words (50% semantically congruent with the sentence, 50% semantically incongruent). During sleep stage 2 and paradoxical sleep: (1) without noise, a larger N400 was observed for (short and long SSL) sentences ending with a semantically incongruent word compared to a congruent word (i.e. an N400 effect); (2) with moderate noise, the N400 effect (observed at wake with short and long SSL sentences) was attenuated for long SSL sentences. Our results suggest that WM for linguistic information is partially preserved during sleep with a smaller capacity compared to wake.Jérôme DaltrozzoLéa ClaudeBarbara TillmannHélène BastujiFabien PerrinPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 12, p e50997 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jérôme Daltrozzo Léa Claude Barbara Tillmann Hélène Bastuji Fabien Perrin Working memory is partially preserved during sleep.
description	Although several cognitive processes, including speech processing, have been studied during sleep, working memory (WM) has never been explored up to now. Our study assessed the capacity of WM by testing speech perception when the level of background noise and the sentential semantic length (SSL) (amount of semantic information required to perceive the incongruence of a sentence) were modulated. Speech perception was explored with the N400 component of the event-related potentials recorded to sentence final words (50% semantically congruent with the sentence, 50% semantically incongruent). During sleep stage 2 and paradoxical sleep: (1) without noise, a larger N400 was observed for (short and long SSL) sentences ending with a semantically incongruent word compared to a congruent word (i.e. an N400 effect); (2) with moderate noise, the N400 effect (observed at wake with short and long SSL sentences) was attenuated for long SSL sentences. Our results suggest that WM for linguistic information is partially preserved during sleep with a smaller capacity compared to wake.
format	article
author	Jérôme Daltrozzo Léa Claude Barbara Tillmann Hélène Bastuji Fabien Perrin
author_facet	Jérôme Daltrozzo Léa Claude Barbara Tillmann Hélène Bastuji Fabien Perrin
author_sort	Jérôme Daltrozzo
title	Working memory is partially preserved during sleep.
title_short	Working memory is partially preserved during sleep.
title_full	Working memory is partially preserved during sleep.
title_fullStr	Working memory is partially preserved during sleep.
title_full_unstemmed	Working memory is partially preserved during sleep.
title_sort	working memory is partially preserved during sleep.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/84782c663a9d42c890231a5473b83ffb
work_keys_str_mv	AT jeromedaltrozzo workingmemoryispartiallypreservedduringsleep AT leaclaude workingmemoryispartiallypreservedduringsleep AT barbaratillmann workingmemoryispartiallypreservedduringsleep AT helenebastuji workingmemoryispartiallypreservedduringsleep AT fabienperrin workingmemoryispartiallypreservedduringsleep
_version_	1718422240554385408

Working memory is partially preserved during sleep.

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