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[hal-03337960] Novel characterization of the relationship between verbal list‐learning outcomes and hippocampal subfields in healthy adults

The relationship between hippocampal subfield volumetry and verbal list-learning test outcomes have mostly been studied in clinical and elderly populations, and remain controversial. For the first time, we characterized a relationship between verbal list-learning test outcomes and hippocampal subfield volumetry on two large separate datasets of 447 and 1,442 healthy young and middle-aged adults, and explored the processes that could explain this relationship. We observed a replicable positive linear correlation between verbal list-learning test free recall scores and CA1 volume, specific to verbal list learning as demonstrated by the hippocampal subfield volumetry independence from verbal intelligence. Learning meaningless items was also positively correlated with CA1 volume, pointing to the role of the test design rather than word meaning. Accordingly, we found that association-based mnemonics mediated the relationship between verbal list-learning test outcomes and CA1 volume. This mediation suggests that integrating items into associative representations during verbal list-learning tests explains CA1 volume variations: this new explanation is consistent with the associative functions of the human CA1.

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[hal-03101306] Neural support of manual preference revealed by BOLD variations during right and left finger-tapping in a sample of 287 healthy adults balanced for handedness




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Human brain anatomy Pseudoneglect Brain atrophy Inferior fronto-occipital fascicle Brain volume Data Management Genome-wide association studies Skeletal muscle Diffusion MRI Human brain Hippocampus Hemispheric lateralization Intrinsic connectivity Language Lateralization Données Hétérogènes Connectivity Heschl's gyrus Cortical thickness Product Lifecycle Management White matter Atrophy Sex Diffusion imaging Bio-Medical Imaging BMI Atlas PLM Schizophrenia Familial sinistrality Neuroscience Corpus callosum Hemispheric specialization Neurosurgery Laterality Language production MRI Association pathways Neuroimagerie Hemispheric dominance Handedness Post-adolescence Cohort studies FMRI Theory of mind Gray matter Graph Theory Aging Neuroanatomy Diffusion Uncinate fasciculus Magnetic resonance imaging Calcium Données Multidimensionnelles Asymmetry Hypertension Cortical surface area White matter anatomy Cerebral small vessel diseases Functional magnetic resonance imaging Cohort Resting state Bundle segmentation Functional connectivity Neuroimaging Genetic Prosody Fiber tractography DTI Cognition Diffusion tensor imaging Inhibition Tractography Emotion Product Lifecycle Management PLM Langage Fiber pathways Inferior fronto-occipital fasciculus Exploration Gestion des données Brain connectivity Speech Cerebrovascular disorders Functional MRI Reproducibility Heschl’s gyrus Multidimensional data Basal ganglia Heterogeneous Data NODDI Mouse model Depression Dissection Anatomy Excitation-contraction coupling Nomenclature Congenital myopathies Stroke Brain Imaging Spatial attention



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