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Article Abstract
Previous neuroimaging studies have highlighted the role of the prefrontal-subcortical circuits in personality trait of novelty seeking (NS), thought to be mediated by the dopaminergic system. However, it remains largely unknown whether cortico-basal-cerebellar connections, heavily influenced by dopamine, are implicated in this temperament dimension as well. The present study aimed to further investigate the relationship between the NS trait and the cortico-basal-cerebellar pathways by using structural covariance network analysis. Ninety-five healthy female volunteers were included in this work, and NS was assessed with the Temperament and Character Inventory (TCI). Our results showed that NS scores were associated with structural connections between the cerebellum and the cerebral cortex, thalamus, and basal ganglia, substantiating the implication of the cortico-basal-cerebellar circuits in the NS construct. In addition, structural connections between visual and sensorimotor regions were also associated with NS scores, indicating that sensory and motor information processing may contribute to NS-related behaviors. Overall, the current findings may deepen our understanding of brain structural circuits related to this temperament dimension.
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| http://dx.doi.org/10.1016/j.neuroscience.2022.02.027 | DOI Listing |
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