Information de reference pour ce titreAccession Number: | 00006125-200543090-00002.
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Author: | Kadosh, Roi Cohen a; Henik, Avishai a,*; Rubinsten, Orly a; Mohr, Harald b; Dori, Halit a; van de Ven, Vincent b,c; Zorzi, Marco d; Hendler, Talma e; Goebel, Rainer c; Linden, David E.J. b,f,g
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Institution: | (a)Department of Behavioral Sciences and Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel (b)Laboratory for Neuroimaging and Neurophysiology, Department of Psychiatry, Goethe University, Frankfurt am Main, Germany (c)Department of Psychology, Neurocognition, University of Maastricht, Maastricht, The Netherlands (d)Department of Psychology, Padua University, Padua, Italy (e)Tel-Aviv Sourasky Medical Center and Tel-Aviv University, Tel-Aviv, Israel (f)Max Planck Institute for Brain Research, Frankfurt, Germany (g)School of Psychology, University of Wales, Bangor, Wales, UK
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Title: | Are numbers special?: The comparison systems of the human brain investigated by fMRI.[Miscellaneous Article]
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Source: | Neuropsychologia. 43(9):1238-1248, 2005.
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Abstract: | : Many studies have suggested that the intraparietal sulcus (IPS), particularly in the dominant hemisphere, is crucially involved in numerical comparisons. However, this parietal structure has been found to be involved in other tasks that require spatial processing or visuospatial attention as well. fMRI was used to investigate three different magnitude comparisons in an event-related-block design: (a) Which digit is larger in numerical value (e.g., 2 or 5)? (b) Which digit is brighter (e.g., 3 or 3)? (c) Which digit is physically larger (e.g., 3 or 3)? Results indicate a widespread cortical network including a bilateral activation of the intraparietal sulci for all different comparisons. However, by computing contrasts of brain activation between the respective comparison conditions and applying a cortical distance effect as an additional criterion, number-specific activation was revealed in left IPS and right temporal regions. These results indicate that there are both commonalities and differences in the spatial layout of the brain systems for numerical and physical comparisons and that especially the left IPS, while involved in magnitude comparison in general, plays a special role in number comparison.
(C) 2005Elsevier, Inc.
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Author Keywords: | Intraparietal sulcus; Magnitude; Distance effect.
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Language: | English.
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Document Type: | Artilce.
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Journal Subset: | Life & Biomedical Sciences.
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ISSN: | 0028-3932
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NLM Journal Code: | 0020713, nzn
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DOI Number: | https://dx.doi.org/10.1016/j.neu...- ouverture dans une nouvelle fenêtre
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