Differential contributions of the left and right inferior parietal lobules to number processing

F. Chochon, L. Cohen, P. F. Van De Moortele, Stanislas Dehaene

Research output: Contribution to journalArticle

446 Scopus citations

Abstract

We measured cerebral activation with functional magnetic resonance imaging at 3 Tesla while eight healthy volunteers performed various number processing tasks known to be dissociable in brain-lesioned patients: naming, comparing, multiplying, or subtracting single digits. The results revealed the activation of a circuit comprising bilateral intraparietal, prefrontal, and anterior cingulate components. The extension and lateralization of this circuit was modulated by task demands. The intraparietal and prefrontal activation was more important in the right hemisphere during the comparison task and in the left hemisphere during the multiplication task and was intensely bilateral during the subtraction task. Thus, partially distinct cerebral circuits with the dorsal parietal pathway underlie distinct arithmetic operations.

Original languageEnglish (US)
Pages (from-to)617-630
Number of pages14
JournalJournal of cognitive neuroscience
Volume11
Issue number6
DOIs
StatePublished - Jan 1 1999

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