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- W3199075257 abstract "Abstract The cortex has a characteristic layout with specialized functional areas forming distributed large-scale networks. However, substantial work shows striking variation in this organization across people, which relates to differences in behavior. While a dominant assumption is that cortical ‘variants’ represent boundary shifts in the borders between regions, here we show that variants can also occur at a distance from their typical position, forming ectopic intrusions. Both forms of variants, border shifts and ectopic intrusions, are common across individuals, but the forms differ in their location, network associations, and activations during tasks. Although both forms of variation are heritable, border shift variants track significantly more with shared genetics than ectopic variants. Further, variant properties are categorically different between subgroups of individuals. Finally, exploratory evidence suggests that variants can be used to predict a small amount of variance in individual differences in behavior, but the two forms differ in which behavioral phenotypes they predict. This work argues that individual differences in brain organization commonly occur in two dissociable forms – border shifts and ectopic intrusions – that must be separately accounted for in the analysis of cortical systems across people. This work expands our knowledge of cortical variation in humans and helps reconceptualize the discussion of how cortical systems variability arises and links to individual differences in cognition and behavior." @default.
- W3199075257 created "2021-09-27" @default.
- W3199075257 creator A5022773342 @default.
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- W3199075257 date "2021-09-18" @default.
- W3199075257 modified "2023-10-15" @default.
- W3199075257 title "Two common and distinct forms of variation in human functional brain networks" @default.
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