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• W4366083872 abstract "Abstract Brain‐segregation attributes in resting‐state functional networks have been widely investigated to understand cognition and cognitive aging using various approaches [e.g., average connectivity within/between networks and brain system segregation (BSS)]. While these approaches have assumed that resting‐state functional networks operate in a modular structure, a complementary perspective assumes that a core‐periphery or rich club structure accounts for brain functions where the hubs are tightly interconnected to each other to allow for integrated processing. In this article, we apply a novel method, persistent homology (PH), to develop an alternative to standard functional connectivity by quantifying the pattern of information during the integrated processing. We also investigate whether PH‐based functional connectivity explains cognitive performance and compare the amount of variability in explaining cognitive performance for three sets of independent variables: (1) PH‐based functional connectivity, (2) graph theory‐based measures, and (3) BSS. Resting‐state functional connectivity data were extracted from 279 healthy participants, and cognitive ability scores were generated in four domains (fluid reasoning, episodic memory, vocabulary, and processing speed). The results first highlight the pattern of brain‐information flow over whole brain regions (i.e., integrated processing) accounts for more variance of cognitive abilities than other methods. The results also show that fluid reasoning and vocabulary performance significantly decrease as the strength of the additional information flow on functional connectivity with the shortest path increases. While PH has been applied to functional connectivity analysis in recent studies, our results demonstrate potential utility of PH‐based functional connectivity in understanding cognitive function." @default.
• W4366083872 created "2023-04-19" @default.
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• W4366083872 date "2023-04-17" @default.
• W4366083872 modified "2023-10-14" @default.
• W4366083872 title "Persistent homology‐based functional connectivity and its association with cognitive ability: Life‐span study" @default.
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• W4366083872 doi "https://doi.org/10.1002/hbm.26304" @default.
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