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An illustration of the developmental changes in brain activity for numerical and arithmetic tasks. (a) A cartoon depiction of the developmental specialization of the left IPS. (b) Fronto-parietal shift over the course of development. IPS: intraparietal sulcus, SFG: superior frontal gyrus, MFG: middle frontal gyrus, IFG: inferior frontal gyrus, PreC: precentral gyrus, SMG: supramarginal gyrus.
