标题：Brain asymmetry differences between Chinese and Caucasian populations: a surface-based morphometric comparison study
作者：Lou Y.; Zhao L.; Yu S.; Sun B.; Hou Z.; Zhang Z.; Tang Y.; Liu S.
作者机构：[Lou, Y] Research Center for Sectional and Imaging Anatomy, Shandong University Cheeloo College of Medicine, Jinan, China, School of Basic Medical Sci 更多
通讯作者地址：[Tang, Y] School of Basic Medical Sciences, Shandong UniversityChina;
来源：Brain Imaging and Behavior
关键词：Brain asymmetry; Cortical thickness; Cortical volume; MRI; Surface area; Surface-based morphometry
摘要：Asymmetry has been proved to exist in the human brain structure, function and behavior. Most of the existing brain asymmetry findings are originated from the western populations, while studies about the brain structural and functional asymmetries in East Asians are limited. Extensive evidence suggested that cultural differences, e.g. education and language, may lead to differences in brain structure and function between races. Therefore, we hypothesized that differences in brain structural asymmetries exist between East Asians and Westerners. In this study, we performed a comprehensive surface-based morphometric (SBM) analysis of brain asymmetries in cortical thickness, volume and surface area in two well-matched groups of right-handed, Chinese (n = 45) and Caucasian (n = 45) young male adults (age = 22–29 years). Our results showed consistent inter-hemispheric asymmetries in the three brain morphological measures in multiple brain regions in the Chinese young adults, including the temporal, frontal, parietal, occipital, insular cortices and the cingulate gyrus. Comparing with the Caucasians, the Chinese group showed greater structural asymmetry in the frontal, temporal, occipital and insular cortices, and smaller asymmetry in the parietal cortex and cingulate gyrus. These findings could provide a new neuroanatomical basis for understanding the distinctions between East Asian and Caucasian in brain functional lateralization. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.