Memory stabilization with targeted reactivation during human slow-wave sleep
It is believed that neural representations of recent experiences become reactivated during sleep, and that this process serves to stabilize associated memories in long-term memory. Here, we initiated this reactivation process for specific memories during slow-wave sleep. Participants studied 50 obje...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
June 12, 2012
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| In: |
Proceedings of the National Academy of Sciences of the United States of America
Year: 2012, Jahrgang: 109, Heft: 26, Pages: 10575-10580 |
| ISSN: | 1091-6490 |
| DOI: | 10.1073/pnas.1201072109 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1073/pnas.1201072109 Verlag, kostenfrei, Volltext: http://www.pnas.org/content/109/26/10575 
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| Verfasserangaben: | Eelco V. van Dongen, Atsuko Takashima, Markus Barth, Jascha Zapp, Lothar R. Schad, Ken A. Paller, Guillén Fernández |
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| 245 | 1 | 0 | |a Memory stabilization with targeted reactivation during human slow-wave sleep |c Eelco V. van Dongen, Atsuko Takashima, Markus Barth, Jascha Zapp, Lothar R. Schad, Ken A. Paller, Guillén Fernández |
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| 520 | |a It is believed that neural representations of recent experiences become reactivated during sleep, and that this process serves to stabilize associated memories in long-term memory. Here, we initiated this reactivation process for specific memories during slow-wave sleep. Participants studied 50 object-location associations with object-related sounds presented concurrently. For half of the associations, the related sounds were re-presented during subsequent slow-wave sleep while participants underwent functional MRI. Compared with control sounds, related sounds were associated with increased activation of right parahippocampal cortex. Postsleep memory accuracy was positively correlated with sound-related activation during sleep in various brain regions, including the thalamus, bilateral medial temporal lobe, and cerebellum. In addition, postsleep memory accuracy was also positively correlated with pre- to postsleep changes in parahippocampal-medial prefrontal connectivity during retrieval of reactivated associations. Our results suggest that the brain is differentially activated by studied and unstudied sounds during deep sleep and that the thalamus and medial temporal lobe are involved in establishing the mnemonic consequences of externally triggered reactivation of associative memories. | ||
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