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Mental arithmetic activates analogic representations of internally generated sums

Kallai, AY and Schunn, CD and Fiez, JA (2012) Mental arithmetic activates analogic representations of internally generated sums. Neuropsychologia, 50 (10). 2397 - 2407. ISSN 0028-3932

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The internal representation of numbers generated during calculation has received little attention. Much of the mathematics learning literature focuses on symbolic retrieval of math facts; in contrast, we critically test the hypothesis that internally generated numbers are represented analogically, using an approximate number system. In an fMRI study, the spontaneous processing of arithmetical expressions was tested. Participants passively viewed a sequence of double-digit addition expressions that summed to the same number. Adaptation was found in number-related regions in a fronto-parietal network. Following adaptation, arrays of dots were introduced, differing in their numerical distance from the sum of the addition expressions. Activation in voxels that showed adaptation to a repeated sum was also sensitive to the distance of the dot quantity from the sum. We conclude that participants exhibited adaptation to an internally generated number, that adapted representations were analogic in nature, and that these analogic representations may undergird arithmetic calculation. © 2012 Elsevier Ltd.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Kallai, AY
Schunn, CDschunn@pitt.eduSCHUNN0000-0003-3589-297X
Fiez, JAfiez@pitt.eduFIEZ
Centers: Other Centers, Institutes, Offices, or Units > Learning Research & Development Center
Date: 1 August 2012
Date Type: Publication
Journal or Publication Title: Neuropsychologia
Volume: 50
Number: 10
Page Range: 2397 - 2407
DOI or Unique Handle: 10.1016/j.neuropsychologia.2012.06.009
Schools and Programs: Dietrich School of Arts and Sciences > Psychology
Refereed: Yes
ISSN: 0028-3932
Date Deposited: 23 Sep 2014 17:07
Last Modified: 02 Feb 2019 15:56


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