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- W2949208329 abstract "The past few years have seen an emergence of approaches that leverage temporal changes in whole-brain patterns of functional connectivity (the chronnectome). In this chronnectome study, we investigate the replicability of the human brain's inter-regional coupling dynamics during rest by evaluating two different dynamic functional network connectivity (dFNC) analysis frameworks using 7 500 functional magnetic resonance imaging (fMRI) datasets. To quantify the extent to which the emergent functional connectivity (FC) patterns are reproducible, we characterize the temporal dynamics by deriving several summary measures across multiple large, independent age-matched samples. Reproducibility was demonstrated through the existence of basic connectivity patterns (FC states) amidst an ensemble of inter-regional connections. Furthermore, application of the methods to conservatively configured (statistically stationary, linear and Gaussian) surrogate datasets revealed that some of the studied state summary measures were indeed statistically significant and also suggested that this class of null model did not explain the fMRI data fully. This extensive testing of reproducibility of similarity statistics also suggests that the estimated FC states are robust against variation in data quality, analysis, grouping, and decomposition methods. We conclude that future investigations probing the functional and neurophysiological relevance of time-varying connectivity assume critical importance." @default.
- W2949208329 created "2019-06-27" @default.
- W2949208329 creator A5010748227 @default.
- W2949208329 creator A5023429332 @default.
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- W2949208329 creator A5032850756 @default.
- W2949208329 creator A5070489711 @default.
- W2949208329 creator A5080067027 @default.
- W2949208329 date "2017-12-01" @default.
- W2949208329 modified "2023-10-16" @default.
- W2949208329 title "Replicability of time-varying connectivity patterns in large resting state fMRI samples" @default.
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