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• W3128472743 endingPage "117842" @default.
• W3128472743 startingPage "117842" @default.
• W3128472743 abstract "Resting-state functional magnetic resonance imaging (rs-fMRI) has an inherently low signal-to-noise ratio largely due to thermal and physiological noise that attenuates the functional connectivity (FC) estimates. Such attenuation limits the reliability of FC and may bias its association with other traits. Low reliability also limits heritability estimates. Classical test theory can be used to obtain a true correlation estimate free of random measurement error from parallel tests, such as split-half sessions of a rs-fMRI scan. We applied a measurement model to split-half FC estimates from the resting-state fMRI data of 1003 participants from the Human Connectome Project (HCP) to examine the benefit of reliability modelling of FC in association with traits from various domains. We evaluated the efficiency of the measurement model on extracting a stable and reliable component of FC and its association with several traits for various sample sizes and scan durations. In addition, we aimed to replicate our previous findings of increased heritability estimates when using a measurement model in a longitudinal adolescent twin cohort. The split-half measurement model improved test-retest reliability of FC on average with +0.33 points (from +0.49 to +0.82), improved strength of associations between FC and various traits on average 1.2-fold (range 1.09-1.35), and increased heritability estimates on average with +20% points (from 39% to 59%) for the full HCP dataset. On average, about half of the variance in split-session FC estimates was attributed to the stable and reliable component of FC. Shorter scan durations showed greater benefit of reliability modelling (up to 1.6-fold improvement), with an additional gain for smaller sample sizes (up to 1.8-fold improvement). Reliability modelling of FC based on a split-half using a measurement model can benefit genetic and behavioral studies by extracting a stable and reliable component of FC that is free from random measurement error and improves genetic and behavioral associations." @default.
• W3128472743 created "2021-02-15" @default.
• W3128472743 creator A5002297531 @default.
• W3128472743 creator A5036898173 @default.
• W3128472743 creator A5039757257 @default.
• W3128472743 creator A5079752137 @default.
• W3128472743 date "2021-05-01" @default.
• W3128472743 modified "2023-10-11" @default.
• W3128472743 title "Reliability modelling of resting-state functional connectivity" @default.
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• W3128472743 doi "https://doi.org/10.1016/j.neuroimage.2021.117842" @default.
• W3128472743 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/33581291" @default.
• W3128472743 hasPublicationYear "2021" @default.

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