The Time Course of Parietal Activation in Single-digit Multiplication: Evidence from Event-related Potentials

Kiefer, Markus; Dehaene, Stanislas

doi:10.1080/135467997387461

Cited by 61 publications

(54 citation statements)

References 41 publications

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“…With positron emission tomography (PET), Dehaene et al (1996) reported bilateral inferior parietal activation, with a left lateralization, during a multiplication task. With ERPs, Kiefer and Dehaene (1997) also found left lateralized inferior parietal activity during both simple and complex multiplication facts, with a tendency for a later bilateral activation for complex multiplication facts only. These observations must be reconciled with the observation that parietal lesions that affect number comprehension may leave multiplication retrieval partially intact (Dehaene & Cohen, 1997;Delazer & Benke, 1997).…”

Section: Multiplication Versus Subtractionmentioning

confidence: 95%

Differential Contributions of the Left and Right Inferior Parietal Lobules to Number Processing

Chochon

Cohen

Moortele

et al. 1999

Journal of Cognitive Neuroscience

524

371

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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.

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Section: Multiplication Versus Subtractionmentioning

confidence: 95%

Differential Contributions of the Left and Right Inferior Parietal Lobules to Number Processing

Chochon

Cohen

Moortele

et al. 1999

Journal of Cognitive Neuroscience

524

371

View full text Add to dashboard Cite

show abstract

“…Parametric studies have revealed that the activation of the HIPS is modulated by semantic parameters such as the absolute magnitude of the numbers and their value relative to a reference point. Thus, intraparietal activity is larger and lasts longer during operations with large numbers than with small numbers (Kiefer & Dehaene, 1997;Stanescu-Cosson, Pinel, Van de Moontele, Le Bihan, Cohen, & Delaene, 2000). It is also modulated by the numerical distance separating the numbers in a comparison task (Dehaene, 1996;Pinel et al, 2001).…”

Section: Neuroimaging Evidencementioning

confidence: 99%

Three Parietal Circuits for Number Processing

Dehaene

Piazza

Pinel

et al. 2003

Cognitive Neuropsychology

Self Cite

2,155

208

2,149

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Did evolution endow the human brain with a predisposition to represent and acquire knowledge about numbers? Although the parietal lobe has been suggested as a potential substrate for a domain-specific representation of quantities, it is also engaged in verbal, spatial, and attentional functions that may contribute to calculation. To clarify the organisation of number-related processes in the parietal lobe, we examine the three-dimensional intersection of fMRI activations during various numerical tasks, and also review the corresponding neuropsychological evidence. On this basis, we propose a tentative tripartite organisation. The horizontal segment of the intraparietal sulcus (HIPS) appears as a plausible candidate for domain specificity: It is systematically activated whenever numbers are manipulated, independently of number notation, and with increasing activation as the task puts greater emphasis on quantity processing. Depending on task demands, we speculate that this core quantity system, analogous to an internal "number line," can be supplemented by two other circuits. A left angular gyrus area, in connection with other left-hemispheric perisylvian areas, supports the manipulation of numbers in verbal form. Finally, a bilateral posterior superior parietal system supports attentional orientation on the mental number line, just like on any other spatial dimension.

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“…1). We can also manipulate the ratio of the amount of blue and green, varying from easy (e.g., 5 green to 15 blue) to more difficult (e.g., 9 green to 11 blue), allowing for investigation of a difficulty effect within the intraparietal region, as suggested by studies of numerical comparison tasks (9,18,19). We stress that the logical relationship between numerosity and extent is asymmetrical; that is, discrete stimuli have both numerosity and analogue extent, whereas analogue stimuli have only analogue extent.…”

mentioning

confidence: 99%

Discrete and analogue quantity processing in the parietal lobe: A functional MRI study

Castelli

Glaser

Butterworth

2006

Proc. Natl. Acad. Sci. U.S.A.

227

173

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The human intraparietal sulcus (IPS) is implicated in processing symbolic number information and possibly in nonsymbolic number information. Specific IPS activity for discrete quantities (numerosities) as compared with continuous, analogue quantity has not been demonstrated. Here we use a stimulus-driven paradigm to distinguish automatic estimation of ''how many things'' from ''how much'' and ''how long.'' The discrete analogue response task (DART) uses the perception of hues which can change either abruptly (discrete, numerous stimuli) or smoothly (analogue, nonnumerous stimuli) in space or in time. Subjects decide whether they saw more green or more blue. A conjunction analysis of spatial and temporal conditions revealed that bilateral IPS was significantly more active during the processing of discrete stimuli than during analogue stimuli, as was a parietal-occipital transition zone. We suggest that processing numerosity is a distinct process from processing analogue quantity, whether extended in space or time, and that an intraparietal network connects objects' segmentation to the estimation of their numerosity. discrete stimuli ͉ magnitude processing ͉ nonsymbolic numerical processing ͉ numerosity ͉ analogue stimuli

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The Time Course of Parietal Activation in Single-digit Multiplication: Evidence from Event-related Potentials

Cited by 61 publications

References 41 publications

Differential Contributions of the Left and Right Inferior Parietal Lobules to Number Processing

Differential Contributions of the Left and Right Inferior Parietal Lobules to Number Processing

Three Parietal Circuits for Number Processing

Discrete and analogue quantity processing in the parietal lobe: A functional MRI study

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