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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23236418/pdf/?tool=EBI |
| _version_ | 1818404533377695744 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-14T08:41:40Z |
| format | Article |
| id | doaj.art-84782c663a9d42c890231a5473b83ffb |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-14T08:41:40Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-84782c663a9d42c890231a5473b83ffb2022-12-21T23:09:17ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-01712e5099710.1371/journal.pone.0050997Working memory is partially preserved during sleep.Jérôme DaltrozzoLéa ClaudeBarbara TillmannHélène BastujiFabien PerrinAlthough 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.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23236418/pdf/?tool=EBI |
| spellingShingle | Jérôme Daltrozzo Léa Claude Barbara Tillmann Hélène Bastuji Fabien Perrin Working memory is partially preserved during sleep. PLoS ONE |
| title | 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_short | Working memory is partially preserved during sleep. |
| title_sort | working memory is partially preserved during sleep |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23236418/pdf/?tool=EBI |
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