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  Experience sampling during fMRI reveals default network and executive system contributions to mind wandering

Christoff, K., Gordon, A. M., Smallwood, J., Smith, R., & Schooler, J. W. (2009). Experience sampling during fMRI reveals default network and executive system contributions to mind wandering. Proceedings of the National Academy of Sciences of the United States of America, 106(21), 8719-8724. doi:10.1073/pnas.0900234106.

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資料種別: 学術論文

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 作成者:
Christoff, Kalina1, 著者
Gordon, Alan M.1, 著者
Smallwood, Jonathan1, 著者           
Smith, Rachelle1, 著者
Schooler, Jonathan W.1, 著者
所属:
1External Organizations, ou_persistent22              

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 要旨: Although mind wandering occupies a large proportion of our waking life, its neural basis and relation to ongoing behavior remain controversial. We report an fMRI study that used experience sampling to provide an online measure of mind wandering during a concurrent task. Analyses focused on the interval of time immediately preceding experience sampling probes demonstrate activation of default network regions during mind wandering, a finding consistent with theoretical accounts of default network functions. Activation in medial prefrontal default network regions was observed both in association with subjective self-reports of mind wandering and an independent behavioral measure (performance errors on the concurrent task). In addition to default network activation, mind wandering was associated with executive network recruitment, a finding predicted by behavioral theories of off-task thought and its relation to executive resources. Finally, neural recruitment in both default and executive network regions was strongest when subjects were unaware of their own mind wandering, suggesting that mind wandering is most pronounced when it lacks meta-awareness. The observed parallel recruitment of executive and default network regions—two brain systems that so far have been assumed to work in opposition—suggests that mind wandering may evoke a unique mental state that may allow otherwise opposing networks to work in cooperation. The ability of this study to reveal a number of crucial aspects of the neural recruitment associated with mind wandering underscores the value of combining subjective self-reports with online measures of brain function for advancing our understanding of the neurophenomenology of subjective experience.

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言語: eng - English
 日付: 2009
 出版の状態: 出版
 ページ: -
 出版情報: -
 目次: -
 査読: 査読あり
 識別子(DOI, ISBNなど): DOI: 10.1073/pnas.0900234106
PMID: 19433790
PMC: PMC2689035
その他: Epub 2009
 学位: -

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出版物名: Proceedings of the National Academy of Sciences of the United States of America
  その他 : Proc. Natl. Acad. Sci. U. S. A.
種別: 学術雑誌
 著者・編者:
所属:
出版社, 出版地: National Academy of Sciences
ページ: - 巻号: 106 (21) 通巻号: - 開始・終了ページ: 8719 - 8724 識別子(ISBN, ISSN, DOIなど): ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230