Identification of Zhoukoudian Homo erectus brain asymmetry using 3D laser scanning

作     者：WU XiuJie PAN Lei 

作者机构：Key Laboratory of Evolutionary Systematics of VertebratesInstitute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China Graduate University of the Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Science Bulletin》 (中国科学通报)

年 卷 期：2011年第56卷第21期

页      面：2215-2220页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 060305[历史学-专门史与整体史] 06[历史学] 0709[理学-地质学] 07[理学] 0603[历史学-世界史] 

基　　金：supported by the National Natural Science Foundation of China (40972017) the Knowledge Innovative Program of the Chinese Academy of Sciences (KZCX2-YW-159 and XDA05130100) the International Cooperation Program of MST of China (2009DFB20580) 

主　　题：三维激光扫描 脑不对称 周口店 人类大脑 不对称性 识别 人脑 南半球 

摘      要：Endocasts are important materials used for the study of human brain evolution,and allow examination of the external features of brain anatomy from the inside the *** examining brain asymmetries in fossil hominids are usually limited to scoring of differences in hemisphere protrusion rostrally and caudally,or to comparing the width of the *** the present study,using 3D laser scanning,we examined asymmetries of the hemisphere volumes and surface areas in the Zhoukoudain (ZKD) Homo erectus,dated to 0.4-0.8 *** with modern endocasts,we found that the absolute hemisphere volumes and surface areas exhibited no significant asymmetries in the ZKD or in modern ***,the relative hemisphere volumes against surface areas differed between the two *** comparing the relative sizes between the left and right hemispheres,the ZKD specimens exhibited a greater variation than in the modern humans;there were no differences in the two hemispheres in the ZKD specimens,while in the modern endocasts the left hemisphere was significantly greater than the right *** data suggest that brain asymmetries originated from relative brain sizes rather than absolute brain volumes during human *** anatomical changes are likely related to the origin of human brain lateralization.