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• W2799002836 abstract "Abstract Neuroimaging studies have implicated a set of striatal and orbitofrontal cortex (OFC) regions that are commonly activated during reward processing tasks. Resting-state functional connectivity (RSFC) studies have demonstrated that the human brain is organized into several functional systems that show strong temporal coherence even in the absence of goal-directed tasks. Here we use seed-based and graph-theory RSFC approaches to characterize the systems-level organization of putative reward regions of at rest. Peaks of connectivity from seed-based RSFC patterns for the nucleus accumbens (NAcc, anatomically defined) and orbitofrontal cortex (OFC, functionally defined) were used to identify candidate reward regions which were merged with a previously used set of regions (Power et al., 2011). Graph-theory was then used to determine system-level membership for all regions. Several regions previously implicated in reward-processing (NAcc, lateral and medial OFC, and ventromedial prefrontal cortex) comprised a distinct, preferentially coupled system. This RSFC system is stable across a range of connectivity thresholds and shares strong overlap with meta-analyses of task-based reward studies. This reward system shares between-system connectivity with systems implicated in cognitive control and self-regulation, including the fronto-parietal, cingulo-opercular, and default systems. Further, differences may exist in the pathways through which control systems interact with key regions of this reward system. Whereas NAcc regions of the reward system are functionally connected to cingulo-opercular and default systems, OFC regions of the reward system show stronger connectivity with the fronto-parietal system. We propose that future work may be able to interrogate group or individual differences in connectivity profiles using the regions delineated in the current work to explore potential relationships to appetitive behaviors, self-regulation failure, and addiction." @default.
• W2799002836 created "2018-05-07" @default.
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• W2799002836 date "2018-04-20" @default.
• W2799002836 modified "2023-09-25" @default.
• W2799002836 title "Reward-related regions form a preferentially coupled system at rest" @default.
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• W2799002836 doi "https://doi.org/10.1101/304865" @default.
• W2799002836 hasPublicationYear "2018" @default.
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