A voxel-by-voxel parametric fMRI study of motor mental rotation: hemispheric specialization and gender differences in neural processing efficiency

被引：0
作者：
Peka S. Christova
Scott M. Lewis
Georgios A. Tagaris
Kâmil Uğurbil
Apostolos P. Georgopoulos
机构：
[1] Veterans Affairs Medical Center,Brain Sciences Center
[2] University of Minnesota Medical School,Department of Neuroscience
[3] University of Minnesota Medical School,Department of Neurology
[4] General Athens Hospital,Department of Neurology
[5] University of Minnesota Medical School,Center for Magnetic Resonance Research
[6] University of Minnesota Medical School,Department of Psychiatry
[7] University of Minnesota,Center for Cognitive Sciences
来源：
Experimental Brain Research | 2008年 / 189卷
关键词：
Mental rotation; fMRI; Gender; Cerebral cortex;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Differences between men and women in brain size, cognitive performance and lateralization of brain activation have been perennial and controversial issues. Here we show that in a motor mental rotation task where women and men performed equally well, the slope of the functional magnetic resonance imaging (fMRI) blood oxygenation level dependent (BOLD) signal per degree of mental rotation was overall 2.4× higher in men than in women. This was attributed to the much more inefficient engagement (i.e. higher slopes) of the right hemisphere by men (mainly the frontal lobe). These findings indicate that women process information much more efficiently than men, which could offset smaller brain size.
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页码：79 / 90
页数：11
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