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From magnitude to natural numbers: A developmental neurocognitive perspective

  • Roi Cohen Kadosh (a1) and Vincent Walsh (a1)

In their target article, Rips et al. have presented the view that there is no necessary dependency between natural numbers and internal magnitude. However, they do not give enough weight to neuroimaging and neuropsychological studies. We provide evidence demonstrating that the acquisition of natural numbers depends on magnitude representation and that natural numbers develop from a general magnitude mechanism in the parietal lobes.

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Ansari D. & Dhital B. (2006) Age-related changes in the activation of the intraparietal sulcus during nonsymbolic magnitude processing: An event-related functional magnetic resonance imaging study. Journal of Cognitive Neuroscience 18:1820–28.
Brannon E. M. (2006) The representation of numerical magnitude. Current Opinion in Neurobiology 16:222–29.
Cantlon J. F., Brannon E. M., Carter E. J. & Pelphrey K. A. (2006) Functional imaging of numerical processing in adults and 4-year-old children. PLoS Biology 4(5):844–54 (e125).
Cohen Kadosh R., Cohen Kadosh K.Kaas A.Henik A. & Goebel R. (2007a) Notation-dependent and -independent representations of numbers in the parietal lobes. Neuron 53:307–14.
Cohen Kadosh R., Cohen Kadosh K., Schuhmann T., Kaas A., Goebel R., Henik A. & Sack A. T. (2007b) Virtual dyscalculia induced by parietal-lobe TMS impairs automatic magnitude processing. Current Biology 17:689–93.
Cohen Kadosh R., Henik A. & Walsh V. (2007c) Small is bright and big is dark in synaesthesia. Current Biology 17:R834–35.
Cohen Kadosh R., Henik A. & Walsh V. (in press) Synaesthesia: Learned or lost? Developmental Science.
Cohen Kadosh K. & Johnson M. H. (2007) Developing a cortex specialized for face perception. Trends in Cognitive Sciences 11:367–69.
Cohen Kadosh R., Lammertyn J. & Izard V. (2008) Are numbers special? An overview of chronometric, neuroimaging, developmental and comparative studies of magnitude representation. Progress in Neurobiology 84:132–47.
Dehaene S., Piazza M., Pinel P. & Cohen L. (2003) Three parietal circuits for number processing. Cognitive Neuropsychology 20:487506.
Feigenson L. (2007) The equality of quantity. Trends in Cognitive Sciences 11:185–87.
Geary D. G. (1993) Mathematical disabilities: Cognitive, neuropsychological, and genetic components. Psychological Bulletin 114:345–62.
Izard V., Dehaene-Lambertz G. & Dehaene S. (2008) Distinct cerebral pathways for object identity and number in human infants. PLoS Biology 6:e11.
Johnson M. H. (2001) Functional brain development in humans. Nature Reviews Neuroscience 2:475–83.
Nieder A. (2005) Counting on neurons: The neurobiology of numerical competence. Nature Reviews Neuroscience 6:177–90.
Rubinsten O. & Henik A. (2005) Automatic activation of internal magnitudes: A study of developmental dyscalculia. Neuropsychology 19:641–48.
Rubinsten O. & Henik A. (2006) Double dissociation of functions in developmental dyslexia and dyscalculia. Journal of Educational Psychology 98:854–67.
Thomas M. S. C. & Johnson M. H. (2008) New advances in understanding sensitive periods in brain development. Current Directions in Psychological Science 17:15.
Walsh V. (2003) A theory of magnitude: Common cortical metrics of time, space and quantity. Trends in Cognitive Sciences 7:483–88.
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Behavioral and Brain Sciences
  • ISSN: 0140-525X
  • EISSN: 1469-1825
  • URL: /core/journals/behavioral-and-brain-sciences
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