How the Brain Maps Every Number
A neuroimaging study led by cognitive neuroscientists at the INSERM-CEA Cognitive Neuroimaging Unit (Unicog) reveals that the human brain constructs a continuous, highly structured spatial semantic map in the intraparietal sulcus to represent numerical magnitudes. Functional MRI scans of adults comparing fractions and whole numbers demonstrate that while fractions demand greater cognitive effort, both distinct numerical formats are projected onto a shared mental number line to enable mathematical reasoning. ….[READ]
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