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- W4368617452 abstract "Mental flexibility (MF) refers to the capacity to dynamically switch from one task to another. Current neurocognitive models suggest that since this function requires interactions between multiple remote brain areas, the integrity of the anatomic tracts connecting these brain areas is necessary to maintain performance. We tested this hypothesis by assessing with a connectome-based lesion-symptom mapping approach the effects of white matter lesions on the brain’s structural connectome and their association with performance on the trail making test, a neuropsychological test of MF, in a sample of 167 first unilateral stroke patients. We found associations between MF deficits and damage of i) left lateralized fronto-temporo-parietal connections and interhemispheric connections between left temporo-parietal and right parietal areas; ii) left cortico-basal connections; and iii) left cortico-pontine connections. We further identified a relationship between MF and white matter disconnections within cortical areas composing the cognitive control, default mode and attention functional networks. These results for a central role of white matter integrity in MF extend current literature by providing causal evidence for a functional interdependence among the regional cortical and subcortical structures composing the MF network. Our results further emphasize the necessity to consider connectomics in lesion-symptom mapping analyses to establish comprehensive neurocognitive models of high-order cognitive functions." @default.
- W4368617452 created "2023-05-05" @default.
- W4368617452 creator A5034321026 @default.
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- W4368617452 creator A5049702688 @default.
- W4368617452 creator A5051142712 @default.
- W4368617452 creator A5052297248 @default.
- W4368617452 date "2023-08-01" @default.
- W4368617452 modified "2023-09-25" @default.
- W4368617452 title "Mental flexibility depends on a largely distributed white matter network: Causal evidence from connectome-based lesion-symptom mapping" @default.
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