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Notation-dependent and -independent representations of numbers in the parietal lobes

Cohen Kadosh, R; Cohen Kadosh, K; Kaas, A; Henik, A; Goebel, R; (2007) Notation-dependent and -independent representations of numbers in the parietal lobes. Neuron , 53 (2) 307 - 314. 10.1016/j.neuron.2006.12.025.

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Abstract

It is a commonly held view that numbers are represented in an abstract way in both parietal lobes. This view is based on failures to find differences between various notational representations. Here we show that by using relatively smaller voxels together with an adaptation paradigm, and analyzing subjects on an individual basis, it is possible to detect specialized numerical representations. The current results reveal a left/right asymmetry in parietal lobe function. In contrast to an abstract representation in the left parietal lobe, the numerical representation in the right parietal lobe is notation dependent, and thus includes non-abstract representations. Our results challenge the commonly held belief that numbers are represented solely in an abstract way in the human brain.

Type:Article
Title:Notation-dependent and -independent representations of numbers in the parietal lobes
DOI:10.1016/j.neuron.2006.12.025
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Brain Sciences > Psychology and Language Sciences (Division of) > Institute of Cognitive Neuroscience
UCL > School of Life and Medical Sciences > Faculty of Life Sciences

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