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• W1969001168 abstract "Recent advances in neuroimaging have highlighted the interest to differentiate hippocampal subfields for cognitive neurosciences and more notably in assessing the effects of normal and pathological aging. The main goal of the present study is to investigate the effects of normal aging onto the volume of the different hippocampal subfields. For this purpose, we developed a new magnetic resonance sequence together with reliable tracing guidelines to assess the volume of different subfields of the hippocampus using a 3 Tesla scanner, and estimated the validity of a simpler and less time-consuming method based on the widely-used automatic Voxel-Based Morphometry (VBM) technique. Three hippocampal regions of interest were delineated on the right and left hippocampi of 50 healthy subjects between 18 and 68 years old corresponding to the CA1, subiculum and other (including CA2-3-4 and Dentate Gyrus) subfields. A strong effect of age was found on the volume of the subiculum only, with a decrease paralleling that of the global gray matter volume, while CA1 and other subfields seemed relatively spared. Although less precise than the ROI-tracing technique, the VBM-based method appeared as a reliable alternative especially to distinguish CA1 and subiculum subfields. Our findings of a specific effect of age on the subiculum are consistent with the developmental hypothesis (last-in first-out theory). This contrasts with the predominant vulnerability of the CA1 subfield to Alzheimer's disease reported in several previous studies, suggesting that the assessment of hippocampal subfields may improve the discrimination between normal and pathological aging." @default.
• W1969001168 created "2016-06-24" @default.
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• W1969001168 date "2010-11-01" @default.
• W1969001168 modified "2023-10-18" @default.
• W1969001168 title "Differential effect of age on hippocampal subfields assessed using a new high-resolution 3T MR sequence" @default.
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• W1969001168 doi "https://doi.org/10.1016/j.neuroimage.2010.06.024" @default.
• W1969001168 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20600996" @default.
• W1969001168 hasPublicationYear "2010" @default.
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