Research about numerosity

Dyscalculia: News from the web:

We know that people who can easily work with both actual quantities like objects or dots and with written arabic numerals and can also easily translate between them so between the non symbolic and symbolic information, have good math skills. Reason to look into the question how the brain codes numbers like 2, 4, 6, 8 if brain sources are used for both symbolic and nonsymbolic information or that they is located in separate spots. Researchers from Western University in Canada and VanderBilt, Nashville did an fMRI study with 139 healthy adults. They used a 7 Tesla machine, which is very powerful so a great signal noise quality. They found that for specific numbers, like 4 and 6, the same neural resource was used to code for quantities of dots and written arabic numerals and also that both the left and right parietal lobes were active, also the dorsolateral prefrontal cortex and that the process is specific to individual numbers in multiple formats. Not everything can be unraveled yet and how this relates to math performance and that there are individual differences in working with symbolic and non-symbolic numbers depending on their math skills    

Read all about it: HERE

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