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General intelligence and memory span: Evidence for a common neuroanatomic framework
- DOI:
- 10.1080/02643290701781557
pages 867-878
Available online: 24 Aug 2010Abstract
General intelligence (g) is highly correlated with working-memory capacity (WMC). It has been argued that these central psychological constructs should share common neural systems. The present study examines this hypothesis using structural magnetic resonance imaging to determine any overlap in brain areas where regional grey matter volumes are correlated to measures of general intelligence and to memory span. In normal volunteers (N = 48) the results (p < .05, corrected for multiple comparisons) indicate that a common anatomic framework for these constructs implicates mainly frontal grey matter regions belonging to Brodmann area (BA) 10 (right superior frontal gyrus and left middle frontal gyrus) and, to a lesser degree, the right inferior parietal lobule (BA 40). These findings support the nuclear role of a discrete parieto-frontal network.
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- Citation information:
- Available online: 24 Aug 2010
Author affiliations
- a Facultad de Psicologı´a, Universidad Autónoma de Madrid, Madrid, Spain
- b Department of Neurology and the MIND Institute, University of New Mexico, Albuquerque, NM, USA
- c School of Medicine, University of California, Irvine, CA, USA
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