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What's Behind a "+" Sign? Perceiving an Arithmetic Operator Recruits Brain Circuits for Spatial Orienting. | LitMetric

What's Behind a "+" Sign? Perceiving an Arithmetic Operator Recruits Brain Circuits for Spatial Orienting.

Cereb Cortex

Institut des Sciences Cognitives Marc Jeannerod, UMR 5304, Centre National de la Recherche Scientifique (CNRS), Université Lyon 1, Bron, France.

Published: May 2018

AI Article Synopsis

  • A study investigated how mathematical symbols, like "+" and "×", trigger spatial processing in the brain, using fMRI to monitor activity.
  • Results showed that seeing a "+" sign activated brain regions responsible for spatial attention more than the "×" sign, suggesting that some operators may influence numerical thinking more than others.
  • The level of spatial activation in response to the "+" sign was linked to a benefit in solving related addition problems, indicating that spatial intuitions play a role in arithmetic calculation and support the idea that math symbols inherently evoke spatial representations.

Article Abstract

Do mathematical symbols evoke spatial representations? Although behavioral studies have long demonstrated interactions between space and the processing of Arabic digits, how to interpret these results remains controversial. Here, we tested whether activity in regions supporting spatial processing contributes to the processing of symbols conveying fundamental arithmetic concepts-such as operation signs-even in the absence of associated digits. Using functional magnetic resonance imaging, we show that merely perceiving a "+" sign triggers activity in brain regions that support the orienting of spatial attention in adults. Activity in these regions was greater for "+" than for "×" signs, indicating that it is modulated by whether an operator reflects an operation that evokes numerical manipulation (rather than rote memorization). Finally, the degree to which subjects activated a spatial region in response to a "+" sign was correlated with the degree to which subjects benefited from being briefly presented with that sign before having to calculate a single-digit addition problem, an effect termed operator-priming. Therefore, not only are some arithmetic operators linked to spatial intuitions, but such intuitions might also have an important role during arithmetic calculation. More generally, our findings support the view that mathematical symbols inherently evoke spatial representations.

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Source
http://dx.doi.org/10.1093/cercor/bhx064DOI Listing

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