Über sprach-, musik- und rechenmechanismen und ihre lokalisationen im großhirn

Henschen, S. E.

doi:10.1007/bf02872428

Cited by 89 publications

(29 citation statements)

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“…Our findings are, therefore, in accordance with results from lesion studies which show that acalculia is more commonly associated with left than right hemisphere damage (Cipolotti, Butterworth, & Denes, 1991;Delazer & Butterworth, 1997;Grafman et al, 1982;Henschen, 1919;Mayer et al, 1999;Sandrini, Miozzo, Cotelli, & Cappa, 2003) and with brain imaging studies showing a left-sided activation in numerical comparison (Pesenti et al, 2000;Fias et al, 2003) or a left-sided predominance (Pinel et al, 1999). During comparisons of various continua, Fulbright, Manson, Skudlarski, Lacadie, and Gore (2003) observed overlapping intraparietal activation for judgments of letter, number, and size ordering, though the left supramarginal gyrus was involved in the distance effect with numbers.…”

Section: Discussionsupporting

confidence: 91%

“…It has been indicated that this ability is specifically associated with neural circuitry relaying in the inferior parietal lobule (IPL). Brain damage to these circuits can cause highly specific impairments in the representation and manipulation of numbers (Dehaene & Cohen, 1997;Delazer & Benke, 1997;Grafman, Passafiume, Faglioni, & Boller, 1982;Henschen, 1919;Mayer et al, 1999) while functional imaging techniques have revealed that this region is active during number processing and calculation (Chochon, Cohen, van de Moortele, & Dehaene, 1999;Dehaene, 1996;Naccache & Dehaene, 2001;Pinel et al, 1999, Pinel, Dehaene, Riviere, & Le Bihan, 2001Pesenti, Thioux, Seron, & De Volder, 2000;Piazza, Mechelli, Butterworth, & Price, 2002;Zago et al, 2001). Moyer and Landauer (1967) were the first to describe the existence of quantitative number representations in humans, but many researchers before them (e.g.…”

Section: Introductionmentioning

confidence: 99%

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The differential involvement of inferior parietal lobule in number comparison: a rTMS study

2004

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Number processing is known to involve several sites within the posterior regions of parietal cortex. Here, we investigated whether neural activity in the inferior parietal lobule (IPL) is essential for number processing, by observing the effects of interfering with its activity during the execution of a standard number comparison task. Subjects performance on the task was significantly slowed down when we delivered trains of repetitive transcranial magnetic stimuli (rTMS) to the posterior parietal scalp site overlying the left IPL, while rTMS did not affect the number comparison task if delivered to homologous, contralateral (right) IPL. In conclusion, the present findings add support to a growing body of evidence from neuropsychology and neuroimaging studies that the left inferior parietal lobule is an important component of the networks subserving the representation of quantity.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

The differential involvement of inferior parietal lobule in number comparison: a rTMS study

2004

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“…The present paper focuses on this last issue, taking into account the considerable progress that has recently been made in neuroimaging methods. The involvement of parietal cortex in number processing was initially discovered on the basis of lesion data (Gerstmann, 1940;Hécaen, Angelergues, & Houillier, 1961;Henschen, 1919). Subsequently, a systematic activation of the parietal lobes during calculation, together with precentral and prefrontal cortices, was discovered (Roland & Friberg, 1985) and extensively replicated using positron emission tomography (PET) Pesenti, Thioux, Seron, & De Volder, 2000;Zago, Pesenti, Mellet, Crivello, Mazoyer, & Tzourio-Mazoyer, 2001) and later fMRI (Burbaud, Camus, Guehl, Bioulac, Caille, & Allard, 1999;Rueckert et al, 1996).…”

Section: Introductionmentioning

confidence: 99%

Three Parietal Circuits for Number Processing

Dehaene

Piazza

Pinel

et al. 2003

Cognitive Neuropsychology

2,170

208

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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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“…As early as 1919, the Swedish physician Salomon Henschen [4] observed that patients with specific brain lesions could no longer work with numbers. He termed this disturbance "acalculia" (Greek a-for "not" and Latin calculare for "to calculate").…”

Section: Neuronal Representation Of Absolute Magnitudementioning

confidence: 99%

Neuronal representation of number and proportion in the primate brain

2012

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Number symbols have allowed humans to develop superior mathematical skills that are a hallmark of technologically advanced cultures. Findings in animal cognition, developmental psychology, and anthropology indicate that these numerical skills are rooted in nonlinguistic biological primitives. Recent studies in human and nonhuman primates using a broad range of methodologies provide evidence that numerical information is represented and processed by regions of the prefrontal and posterior parietal lobes, where single neurons are tuned to preferred absolute quantities. Until recently, data exploring ratios of quantities, as in proportions and fractions, were comparatively sparse. New data derived with complementary methods and from different model systems now shed light on the mechanisms of magnitude ratio representations. A coding scheme for proportions has emerged that is highly reminiscent of the representation of absolute number. The magnitude code is automatic, independent of language and the format of presentation. These findings suggest that the primate brain houses a phylogenetically old network for the representation of quantity that, during the course of human evolution, has been coopted to build our remarkable sense of number.

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Über sprach-, musik- und rechenmechanismen und ihre lokalisationen im großhirn

Cited by 89 publications

References 0 publications

The differential involvement of inferior parietal lobule in number comparison: a rTMS study

The differential involvement of inferior parietal lobule in number comparison: a rTMS study

Three Parietal Circuits for Number Processing

Neuronal representation of number and proportion in the primate brain

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