Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.

<h4>Background</h4>Spontaneous thought processes (STPs), also called daydreaming or mind-wandering, occur ubiquitously in daily life. However, the functional significance of STPs remains largely unknown.<h4>Methodology/principal finding</h4>Using functional magnetic resonance...

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Autores principales:	Kun Wang, Chunshui Yu, Lijuan Xu, Wen Qin, Kuncheng Li, Lin Xu, Tianzi Jiang
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2009
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/fc3f45457574434ead0373a5f8b2ff42
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spelling	oai:doaj.org-article:fc3f45457574434ead0373a5f8b2ff422021-11-25T06:16:40ZOffline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.1932-620310.1371/journal.pone.0004867https://doaj.org/article/fc3f45457574434ead0373a5f8b2ff422009-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19290044/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Spontaneous thought processes (STPs), also called daydreaming or mind-wandering, occur ubiquitously in daily life. However, the functional significance of STPs remains largely unknown.<h4>Methodology/principal finding</h4>Using functional magnetic resonance imaging (fMRI), we first identified an STPs-network whose activity was positively correlated with the subjects' tendency of having STPs during a task-free state. The STPs-network was then found to be strongly associated with the default network, which has previously been established as being active during the task-free state. Interestingly, we found that offline reprocessing of previously memorized information further increased the activity of the STPs-network regions, although during a state with less STPs. In addition, we found that the STPs-network kept a dynamic balance between functional integration and functional separation among its component regions to execute offline memory reprocessing in STPs.<h4>Conclusion/significance</h4>These findings strengthen a view that offline memory reprocessing and STPs share the brain's default network, and thus implicate that offline memory reprocessing may be a predetermined function of STPs. This supports the perspective that memory can be consolidated and modified during STPs, and thus gives rise to a dynamic behavior dependent on both previous external and internal experiences.Kun WangChunshui YuLijuan XuWen QinKuncheng LiLin XuTianzi JiangPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 4, Iss 3, p e4867 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kun Wang Chunshui Yu Lijuan Xu Wen Qin Kuncheng Li Lin Xu Tianzi Jiang Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.
description	<h4>Background</h4>Spontaneous thought processes (STPs), also called daydreaming or mind-wandering, occur ubiquitously in daily life. However, the functional significance of STPs remains largely unknown.<h4>Methodology/principal finding</h4>Using functional magnetic resonance imaging (fMRI), we first identified an STPs-network whose activity was positively correlated with the subjects' tendency of having STPs during a task-free state. The STPs-network was then found to be strongly associated with the default network, which has previously been established as being active during the task-free state. Interestingly, we found that offline reprocessing of previously memorized information further increased the activity of the STPs-network regions, although during a state with less STPs. In addition, we found that the STPs-network kept a dynamic balance between functional integration and functional separation among its component regions to execute offline memory reprocessing in STPs.<h4>Conclusion/significance</h4>These findings strengthen a view that offline memory reprocessing and STPs share the brain's default network, and thus implicate that offline memory reprocessing may be a predetermined function of STPs. This supports the perspective that memory can be consolidated and modified during STPs, and thus gives rise to a dynamic behavior dependent on both previous external and internal experiences.
format	article
author	Kun Wang Chunshui Yu Lijuan Xu Wen Qin Kuncheng Li Lin Xu Tianzi Jiang
author_facet	Kun Wang Chunshui Yu Lijuan Xu Wen Qin Kuncheng Li Lin Xu Tianzi Jiang
author_sort	Kun Wang
title	Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.
title_short	Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.
title_full	Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.
title_fullStr	Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.
title_full_unstemmed	Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.
title_sort	offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.
publisher	Public Library of Science (PLoS)
publishDate	2009
url	https://doaj.org/article/fc3f45457574434ead0373a5f8b2ff42
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Offline memory reprocessing: involvement of the brain's default network in spontaneous thought processes.

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