Abstract：
:Total brain volume accounts for about 16% of the variance in general intelligence scores (IQ), but how volumes of specific regions-of-interest (ROIs) relate to IQ is not known. We used voxel-based morphometry (VBM) in two independent samples to identify substantial gray matter (GM) correlates of IQ. Based on statistical conjunction of both samples (N = 47; P < 0.05 corrected for multiple comparisons), more gray matter is associated with higher IQ in discrete Brodmann areas (BA) including frontal (BA 10, 46, 9), temporal (BA 21, 37, 22, 42), parietal (BA 43 and 3), and occipital (BA 19) lobes and near BA 39 for white matter (WM). These results underscore the distributed neural basis of intelligence and suggest a developmental course for volume--IQ relationships in adulthood.
journal_name
Neuroimagejournal_title
NeuroImageauthors
Haier RJ,Jung RE,Yeo RA,Head K,Alkire MTdoi
10.1016/j.neuroimage.2004.04.025keywords:
subject
Has Abstractpub_date
2004-09-01 00:00:00pages
425-33issue
1eissn
1053-8119issn
1095-9572pii
S1053811904002332journal_volume
23pub_type
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