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Gender differences in brain development in Chinese children and adolescents: a structural MRI study

机译:中国儿童和青少年大脑发育的性别差异:结构性MRI研究

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Using optimized voxel-based morphometry (VBM), this study systematically investigated gender differences in brain development through magnetic resonance imaging (MRI) data in 158 Chinese normal children and adolescents aged 7.26 to 22.80 years (mean age 15.03±4.70 years, 78 boys and 80 girls). Gender groups were matched for measures of age, handedness, education level. The customized brain templates, including Trweighted image and gray matter (GM)/white matter (WM)/cerebro-spinal fluid (CSF) prior probability maps, were created from all participants. Results showed that the total intracranial volume (TIV), global absolute GM and global WM volume in girls were significantly smaller than those in boys. The hippocampus grew faster in girls than that in boys, but the amygdala grew faster in boys than that in girls. The rate of regional GM decreases with age was steeper in the left superior parietal lobule, bilateral inferior parietal lobule, left precuneus, and bilateral supramarginal gyrus in boys compared to girls, which was possibly related to better spatial processing ability in boys. Regional GM volumes were greater in bilateral superior temporal gyrus, bilateral inferior frontal gyrus and bilateral middle frontal gyrus in girls. Regional WM volumes were greater in the left temporal lobe, right inferior parietal and bilateral middle frontal gyrus in girls. The gender differences in the temporal and frontal lobe maybe be related to better language ability in girls. These findings may aid in understanding the differences in cognitive function between boys and girls.
机译:本研究使用优化的基于体素的形态计量学(VBM),通过磁共振成像(MRI)数据系统研究了158位年龄在7.26至22.80岁(平均年龄15.03±4.70岁),78位男孩和青少年的中国正常儿童和青少年的大脑发育中的性别差异。 80个女孩)。对性别组进行了年龄,惯性,受教育程度的匹配。从所有参与者中创建了定制的脑模板,包括权重图像和灰质(GM)/白质(WM)/脑脊髓液(CSF)先验概率图。结果显示,女孩的总颅内体积(TIV),全球绝对GM和全球WM量明显小于男孩。女孩的海马生长比男孩快,但是男孩的杏仁核生长快于女孩。与女孩相比,男孩左顶壁小叶,双侧顶壁小叶,左前突神经和双侧上颌上回的区域性GM随年龄的增加更陡峭,这可能与男孩更好的空间处理能力有关。在女孩的双侧颞上回,双侧下额回和双侧中额回中,区域性GM量更大。女孩的左颞叶,右下顶壁和双侧中额回的区域WM量更大。颞叶和额叶的性别差异可能与女孩语言能力的提高有关。这些发现可能有助于理解男孩和女孩在认知功能上的差异。

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