Functional brain networks are dominated by stable group and individual factors, not cognitive or daily variation

By Caterina Gratton, Timothy O. Laumann, A. Nielsen, Deanna J. Greene, Evan M. Gordon, Adrian W. Gilmore, Steven M. Nelson, Rebecca S. Coalson, Abraham Z. Snyder, Bradley L. Schlaggar and 2 more. Neuron, 2018

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Summary The organization of human brain networks can be measured by capturing correlated brain activity with functional magnetic resonance imaging (fMRI). There is considerable interest in understanding how brain networks vary across individuals, neuropsychiatric populations, or are altered during the performance of specific behaviors. However, the plausibility and validity of such measurements is dependent on the extent to which functional networks are stable over time or are state-dependent. We analyzed data from 9 high-quality highly-sampled individuals to parse the magnitude and anatomical distribution of network variability across subjects, sessions, and tasks. Critically, we find that functional networks are dominated by common organizational principles and stable individual features, with substantially more modest contributions from task-state and day-to-day variability. Sources of variation were differentially distributed across the brain and differentially linked to intrinsic and task-evoked sources. We conclude that functional networks are suited to measuring stable individual characteristics, suggesting utility in personalized medicine.

Subfields: Cognitive Neuroscience, Experimental and Cognitive Psychology

View Paper: https://www.semanticscholar.org/paper/19c690c3e38038c35c20de464f60867c787aac2d

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In Cognitive Neuroscience

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In Experimental and Cognitive Psychology

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