We investigated typical orbitofront-limbic structural development of a non-human primate model, common marmoset, using longitudinal MRI data. Overall, robust volumetric growth was observed during infancy. This rapid brain volumetric growth was associated with the largest decrease in diffusivities of diffusion tensor imaging. That suggest that the volume increment result from an increase in the number and size of cells, dendrites, and spines in the regions. In addition, our result suggested familial factors contributed the development of the orbitofrontal-limbic brain regions. Overall, this study provides further data on the factors and timing important for typical brain development.
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