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Decreased Functional Connectivity by Aging Is Associated with Cognitive Decline.
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- Author(s): Onoda, Keiichi; Ishihara, Masaki; Yamaguchi, Shuhei
- Source:
Journal of Cognitive Neuroscience. Nov2012, Vol. 24 Issue 11, p2186-2198. 13p. 1 Color Photograph, 1 Diagram, 5 Charts, 5 Graphs. - Source:
- Additional Information
- Subject Terms:
- Abstract: Aging is related to cognitive decline, and it has been reported that aging disrupts some resting state brain networks. However, most studies have focused on the default mode network and ignored other resting state networks. In this study, we measured resting state activity using fMRI and explored whether cognitive decline with aging is related to disrupted resting state networks. Independent component analysis was used to evaluate functional connectivity. Notably, the connectivity within the salience network that consisted of the bilateral insula and the anterior cingulated cortex decreased with aging; the impairment of functional connectivity was correlated with measured decreases in individual cognitive abilities. Furthermore, certain internetwork connectivities (salience to auditory, default mode to visual, etc.) also decreased with aging. These results suggest that (1) aging affects not only the default mode network but also other networks, specifically the salience network; (2) aging affects internetwork connectivity; and (3) disruption of the salience network is related to cognitive decline in elderly people. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Journal of Cognitive Neuroscience is the property of MIT Press and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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