Coactivation of the Default Mode Network regions and Working Memory Network regions during task preparation
書誌事項
- 公開日
- 2014-08-05
- 資源種別
- journal article
- 権利情報
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- https://creativecommons.org/licenses/by-nc-nd/4.0
- https://creativecommons.org/licenses/by-nc-nd/4.0
- DOI
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- 10.1038/srep05954
- 公開者
- Springer Science and Business Media LLC
説明
The Default Mode Network (DMN) regions exhibit deactivation during a wide variety of resource demanding tasks. However, recent brain imaging studies reported that they also show activation during various cognitive activities. In addition, studies have found a negative correlation between the DMN and the working memory network (WMN). Here, we investigated activity in the DMN and WMN regions during preparation and execution phases of a verbal working memory task. Results showed that the core DMN regions, including the medial prefrontal cortex and posterior cingulate cortex, and WMN regions were activated during preparation. During execution, however, the WMN regions were activated but the DMN regions were deactivated. The results suggest that activation of these network regions is affected by allocation of attentional resources to the task relevant regions due to task demands. This study extends our previous results by showing that the core DMN regions exhibit activation during task preparation and deactivation during task execution.
収録刊行物
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- Scientific Reports
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Scientific Reports 4 (1), 5954-, 2014-08-05
Springer Science and Business Media LLC
