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Are numbers grounded in a general magnitude processing system? A functional neuroimaging meta-analysis

(2017) NEUROPSYCHOLOGIA. 105. p.50-69
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Abstract
It is currently debated whether numbers are processed using a number-specific system or a general magnitude processing system, also used for non-numerical magnitudes such as physical size, duration, or luminance. Activation likelihood estimation (ALE) was used to conduct the first quantitative meta-analysis of 93 empirical neuroimaging papers examining neural activation during numerical and non-numerical magnitude processing. Foci were compiled to generate probabilistic maps of activation for non-numerical magnitudes (e.g. physical size), symbolic numerical magnitudes (e.g. Arabic digits), and nonsymbolic numerical magnitudes (e.g. dot arrays). Conjunction analyses revealed overlapping activation for symbolic, nonsymbolic and non-numerical magnitudes in frontal and parietal lobes. Contrast analyses revealed specific activation in the left superior parietal lobule for symbolic numerical magnitudes. In contrast, small regions in the bilateral precuneus were specifically activated for nonsymbolic numerical magnitudes. No regions in the parietal lobes were activated for non-numerical magnitudes that were not also activated for numerical magnitudes. Therefore, numbers are processed using both a generalized magnitude system and format specific number regions.
Keywords
Numerical magnitude, Non-numerical magnitude, Neural specialization, Functional magnetic resonance imaging, Symbolic, Nonsymbolic

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Chicago
Sokolowski, H. Moriah, Wim Fias, Chuka Bosah Ononye, and Daniel Ansari. 2017. “Are Numbers Grounded in a General Magnitude Processing System? A Functional Neuroimaging Meta-analysis.” Neuropsychologia 105: 50–69.
APA
Sokolowski, H. M., Fias, W., Bosah Ononye, C., & Ansari, D. (2017). Are numbers grounded in a general magnitude processing system? A functional neuroimaging meta-analysis. NEUROPSYCHOLOGIA, 105, 50–69. Presented at the 10th Anniversary Meeting of Concepts, Action and Objects (CAOs).
Vancouver
1.
Sokolowski HM, Fias W, Bosah Ononye C, Ansari D. Are numbers grounded in a general magnitude processing system? A functional neuroimaging meta-analysis. NEUROPSYCHOLOGIA. Elsevier BV; 2017;105:50–69.
MLA
Sokolowski, H. Moriah, Wim Fias, Chuka Bosah Ononye, et al. “Are Numbers Grounded in a General Magnitude Processing System? A Functional Neuroimaging Meta-analysis.” NEUROPSYCHOLOGIA 105 (2017): 50–69. Print.
@article{8548797,
  abstract     = {It is currently debated whether numbers are processed using a number-specific system or a general magnitude processing system, also used for non-numerical magnitudes such as physical size, duration, or luminance. Activation likelihood estimation (ALE) was used to conduct the first quantitative meta-analysis of 93 empirical neuroimaging papers examining neural activation during numerical and non-numerical magnitude processing. Foci were compiled to generate probabilistic maps of activation for non-numerical magnitudes (e.g. physical size), symbolic numerical magnitudes (e.g. Arabic digits), and nonsymbolic numerical magnitudes (e.g. dot arrays). Conjunction analyses revealed overlapping activation for symbolic, nonsymbolic and non-numerical magnitudes in frontal and parietal lobes. Contrast analyses revealed specific activation in the left superior parietal lobule for symbolic numerical magnitudes. In contrast, small regions in the bilateral precuneus were specifically activated for nonsymbolic numerical magnitudes. No regions in the parietal lobes were activated for non-numerical magnitudes that were not also activated for numerical magnitudes. Therefore, numbers are processed using both a generalized magnitude system and format specific number regions.},
  author       = {Sokolowski, H. Moriah and Fias, Wim and Bosah Ononye, Chuka and Ansari, Daniel},
  issn         = {0028-3932},
  journal      = {NEUROPSYCHOLOGIA},
  language     = {eng},
  location     = {Ctr Mind Brain Sci, Rovereto, ITALY },
  pages        = {50--69},
  publisher    = {Elsevier BV},
  title        = {Are numbers grounded in a general magnitude processing system? A functional neuroimaging meta-analysis},
  url          = {http://dx.doi.org/10.1016/j.neuropsychologia.2017.01.019},
  volume       = {105},
  year         = {2017},
}

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