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• W3105860793 abstract "Abstract Focal brain lesions disrupt resting-state functional connectivity, but the underlying structural mechanisms are unclear. Here, we examined the direct and indirect effects of structural disconnections on resting-state functional connectivity in a large sample of sub-acute stroke patients with heterogeneous brain lesions. We defined direct disconnections as the loss of direct structural connections between two regions, and indirect disconnections as increases in the shortest structural path length between two regions that lack direct structural connections. On average, nearly 20% of all region pairs suffered either a direct or indirect disconnection by the lesions in our sample. Importantly, both directly and indirectly disconnected region pairs showed more severe functional connectivity disruptions than region pairs with spared direct and indirect connections, respectively, although functional connectivity disruptions tended to be most severe between region pairs that sustained direct structural disconnections. Together, these results emphasize the widespread impacts of focal brain lesions on the structural connectome, and show that these impacts are reflected by disruptions of the functional connectome. Further, they indicate that in addition to direct structural disconnections, lesion-induced increases in the structural shortest path lengths between indirectly structurally connected region pairs provide information about the remote functional disruptions caused by focal brain lesions." @default.
• W3105860793 created "2020-11-23" @default.
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• W3105860793 date "2019-09-30" @default.
• W3105860793 modified "2023-09-26" @default.
• W3105860793 title "Increases in structural shortest path lengths provide information about the distal neurophysiological consequences of focal brain lesions" @default.
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• W3105860793 hasPublicationYear "2019" @default.
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