Age-related Changes in the Activation of the Intraparietal Sulcus during Nonsymbolic Magnitude Processing: An Event-related Functional Magnetic Resonance Imaging Study

By Daniel Ansari, Bibek Dhital. Journal of Cognitive Neuroscience, 2006

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Representation of number in the brain. (2009, background): “…neuroimaging studies of numerical development available so far suggest that the left intraparietal cortex exhibits an increase in activation and in the precision of its number code (Ansari et al. 2005, Ansari & Dhital 2006, www.annualreviews.org • Representation of Number in the Brain 197 A nn u.”
Cultural recycling of cortical maps. (2007, unknown): “Ansari and Dhital (2006) observed a greater effect of the distance between numbers during a comparison task in this region in adults compared to 10-year-olds, suggesting an increasing involvement of this region with increasing age.”
How do symbolic and non-symbolic numerical magnitude processing skills relate to individual differences in children's mathematical skills? A review of evidence from brain and behavior (2013, background): “[36] for a meta-analysis in children), with evidence suggesting that there is increasing specialization of the parietal cortex for numerical magnitude processing over developmental time [4,3,11].”
Arithmetic in the Child and Adult Brain (2015, methodology): “In a non-symbolic comparison task, Ansari and Dhital (2006) found that only 9–11-year-old children displayed a distance effect in the right dorsal lateral PFC, whereas 19–21- year-old adults had stronger distance effect in the left anterior IPS.”