Dissociated brain organization for two-digit addition and subtraction: An fMRI investigation
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AbstractThe present study compared the patterns of brain activation elicited by two-digit addition and subtraction problems. Thirty-two Chinese undergraduates of the same educational background and of similar age were asked to assess whether arithmetic operations were true or false during functional magnetic resonance imaging. Results showed that both complex addition and subtraction were supported by the broad neural system that involved regions within the inferior parietal lobule, the precuneus, and the inferior occipital gyrus, as well as some subcortical structures. Nevertheless, complex problems involving addition elicited more activation mainly in the bilateral medial frontal gyrus, whereas problems involving subtraction had more activation in the precentral gyrus and the thalamus in the right hemisphere, as well as the inferior parietal lobule in the left hemisphere. This pattern of dissociated activation suggests that partially separate neuronal networks might support these different operations. It also suggests that complex addition has a greater reliance on the fronto-parietal cortical circuit and subtraction on the parieto-subcortical circuit. (C) 2011 Elsevier Inc. All rights reserved.
All Author(s) ListNi YR, Shu SY, Guo ZY, Liu SR, Bao Y, Liu SH, Chan WY
Journal nameBrain Research Bulletin
Detailed descriptionTo ORKTS: doi:10.1016/j.brainresbull.2011.08.016
Year2011
Month11
Day25
Volume Number86
Issue Number5-6
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Pages395 - 402
ISSN0361-9230
eISSN1873-2747
LanguagesEnglish-United Kingdom
KeywordsAddition; Behavioral performance; Calculation reasoning; Cortex; Functional magnetic resonance imaging (fMRI); Subcortex; Subtraction
Web of Science Subject CategoriesNeurosciences; NEUROSCIENCES; Neurosciences & Neurology

Last updated on 2020-03-07 at 04:22