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The mental number line and the human angular gyrus

Göbel, S., Walsh, V. and Rushworth, M.F.S. (2001) The mental number line and the human angular gyrus. Neuroimage, 14 (6). pp. 1278-1289. ISSN 1053-8119

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To investigate the hemispheric organization of a language-independent spatial representation of number magnitude in the human brain we applied focal repetitive transcranial magnetic stimulation (rTMS) to the right or left angular gyrus while subjects performed a number comparison task with numbers between 31 and 99. Repetitive TMS over the angular gyrus disrupted performance of a visuospatial search task, and rTMS at the same site disrupted organization of the putative “number line.” In some cases the pattern of disruption caused by angular gyrus rTMS suggested that this area normally mediates a spatial representation of number. The effect of angular gyrus rTMS on the number line task was specific. rTMS had no disruptive effect when delivered over another parietal region, the supramarginal gyrus, in either the left or the right hemisphere.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Psychology (York)
Depositing User: York RAE Import
Date Deposited: 07 Apr 2009 11:54
Last Modified: 07 Apr 2009 11:54
Published Version: http://dx.doi.org/10.1006/nimg.2001.0927
Status: Published
Publisher: Elsevier
Identification Number: 10.1006/nimg.2001.0927
URI: http://eprints.whiterose.ac.uk/id/eprint/7093

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