New interpretation of Laetoli footprints using an experimental approach and Procrustes analysis:: Preliminary results
New interpretation of Laetoli footprints using an experimental approach and Procrustes analysis:: Preliminary results
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DOI：
10.1016/j.crpv.2005.09.001
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发表时间：
2006-04-01
影响因子：
1.1
通讯作者：
Pelle, Eric
中科院分区：
文献类型：
--
作者：
Berge, Christine;Penin, Xavier;Pelle, Eric
我们比较了Laetoli足迹（G1/35-36-37，G3/26）与现代人类（62个足迹）和黑猩猩两足行走（5个足迹）。摄像机使我们能够在湿粘土人行道上捕获行走参数，并使用Procrustes方法来分析足迹形状（轮廓和压力中心）。像人类一样，莱托利原始人走路时脚的间隙很小，可能速度也很低（他们用脚后跟作为刹车）。他们保留了某些类人猿的特征（脚的比例，滚动）。他们还拥有更明显的人类特征（小拱顶，跖骨压力，类似脚趾）。就像人类在柔软的地面上行走一样，他们在接触地面时弯曲脚趾，然后通过推动脚掌和脚趾（大拇趾和侧脚趾共同作用）来推动自己。与黑猩猩相比，永久弯曲或卷曲的手指的假设没有保留。
We compared Laetoli footprints (G1/35-36-37, G3/26) with modern humans (62 footprints), and a chimpanzee walking bipedally (five footprints). Video cameras allowed us to capture walking parameters on a wet clay walkway, and the Procrustes method was used to analyze the footprint shape (outlines and centres of pressure). Like humans, Laetoli hominids walked with small feet gap, and probably low velocity (they used heels as brakes). They preserved certain ape-like traits (foot proportions, roll-off). They also possessed more marked human-like traits (small vault, metatarsal pressure, similar toe-off). Like humans walking on a soft ground, they flexed toes at ground contact, and then propelled themselves by pushing on the ball of the foot and on digits (hallux and lateral toes acting together). The hypothesis of permanently flexed, or curled-underneath, digits was not retained by comparison with the chimpanzee.