The Endocast of MH1, Australopithecus sediba

被引：118

作者：

Carlson, Kristian J. ^{[1
,2
]}

Stout, Dietrich ^{[3
]}

Jashashvili, Tea ^{[1
,4
,5
]}

de Ruiter, Darryl J. ^{[1
,6
]}

Tafforeau, Paul ^{[7
]}

Carlson, Keely ^{[6
]}

Berger, Lee R. ^{[1
,8
]}

机构：

[1] Univ Witwatersrand, Inst Human Evolut, Palaeosci Ctr, ZA-2050 Johannesburg, South Africa

[2] Indiana Univ, Dept Anthropol, Bloomington, IN 47405 USA

[3] Emory Univ, Dept Anthropol, Atlanta, GA 30322 USA

[4] Georgian Natl Museum, GE-0105 Tbilisi, Georgia

[5] Univ Zurich, Anthropol Inst & Museum, CH-8057 Zurich, Switzerland

[6] Texas A&M Univ, Dept Anthropol, College Stn, TX 77843 USA

[7] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[8] Univ Witwatersrand, Sch Geosci, ZA-2050 Johannesburg, South Africa

来源：

SCIENCE | 2011年 / 333卷 / 6048期

基金：

新加坡国家研究基金会; 美国安德鲁·梅隆基金会;

关键词：

ORBITOFRONTAL CORTEX; BRAIN; EVOLUTION; ORGANIZATION; ASYMMETRY; AFRICANUS; REGION; HUMANS;

D O I：

10.1126/science.1203922

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The virtual endocast of MH1 (Australopithecus sediba), obtained from high-quality synchrotron scanning, reveals generally australopith-like convolutional patterns on the frontal lobes but also some foreshadowing of features of the human frontal lobes, such as posterior repositioning of the olfactory bulbs. Principal component analysis of orbitofrontal dimensions on australopith endocasts (MH1, Sts 5, and Sts 60) indicates that among these, MH1 orbitofrontal shape and organization align most closely with human endocasts. These results are consistent with gradual neural reorganization of the orbitofrontal region in the transition from Australopithecus to Homo, but given the small volume of the MH1 endocast, they are not consistent with gradual brain enlargement before the transition.

引用

页码：1402 / 1407

页数：6

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