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人类甲骨外形和横截面几何学的变化和共变
Samuel B Tanner1, Ameline Bardo1,2, Thomas W Davies1,3
1School of Anthropology and Conservation, University of Kent, Canterbury, UK.
American journal of biological anthropology
|November 6, 2023
概括
几何形态学 (GM) 和横截面几何学 (CSG) 揭示了人类群体之间的骨强度和形状差异. 这些方法将外部骨形状与生物力学强度相关联,有助于重建过去的活动.
科学领域:
- 古人类学古人类学.
- 生物力学 生物力学
- 骨生物学 骨生物学
背景情况:
- 几何形态测量 (GM) 和横截面几何 (CSG) 是分析骨结构和推断过去活动的关键方法.
- 外部骨形状 (GM) 和内侧骨结构特性 (CSG) 之间的关系仍然未被充分研究.
研究的目的:
- 为了研究外侧手指骨形状和横截面几何学之间的共变.
- 分析三种现代人类群体的甲手臂形状和结构变化.
主要方法:
- 应用几何形态测量 (GM) 来分析外侧手指甲骨形状 (手指甲骨1-5).
- 利用横截面几何学 (CSG) 来评估三个位置的半身骨结构.
- 在一个沉船者群体 (玛丽·罗斯),一个工业前群体和一个工业后群体之间比较甲手臂形状和CSG.
主要成果:
- 外部甲手腕形状的变化与隔膜宽度和关节表面大小有关.
- 在玛丽和工业前群体 (非极性手指) 之间以及在工业前和工业后群体 (第三手指) 之间观察到显著的形状差异.
- 玛丽·罗斯和后工业群体比前工业群体表现出更强大的手指甲骨,在非极形手指甲骨中,外部强度和生物力学强度之间存在显著的相关性.
结论:
- 甲手臂结构和形状的差异表明研究的人群中手动活动模式的变化.
- 整合GM,CSG,以及对体和手动动学的分析,可以增强对过去手动行为的重建.
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