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Global patterns of the cranial form of modern human populations described by analysis of a 3D surface homologous model
Matsumura, Hirofumi Tanijiri, Toyohisa Kouchi, Makiko Hanihara, Tsunehiko Friess, Martin Moiseyev, Vyacheslav Miyahara, Kengo
Matsumura, Hirofumi
Tanijiri, Toyohisa
Kouchi, Makiko
Hanihara, Tsunehiko
Friess, Martin
Moiseyev, Vyacheslav
Miyahara, Kengo
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2022-08-15
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2021-11-10
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anatomy
anthropology
biological anthropology
skeleton
anthropology
biological anthropology
skeleton
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This study assessed the regional diversity of the human cranial form by using geometric homologous models based on scanned data from 148 ethnic groups worldwide. This method adopted a template-fitting technique for a nonrigid transformation via the iterative closest point algorithm to generate the homologous meshes. Through the application of principal component analysis to 342 sampled homologous models, the largest variation was detected in overall size, and small South Asian crania were clearly verified. The next greatest diversity was found in the length/breadth proportion of the neurocranium, which showed the contrast between the elongated crania of Africans and the globular crania of Northeast Asians. Notably, this component was slightly correlated with the facial profile. Well-known facial features, such as the forward projection of the cheek among Northeast Asians and compaction of the European maxilla, were reconfirmed. These facial variations were highly correlated with the calvarial outline, particularly the degree of frontal and occipital inclines. An allometric pattern was detected in facial proportions in relation to overall cranial size; in larger crania, the facial profiles tend to be longer and narrower, as demonstrated among many American natives and Northeast Asians. Although our study did not include data on environmental variables that are likely to affect cranial morphology, such as climate or dietary conditions, the large datasets of homologous cranial models will be usefully available for seeking various attributions to phenotypic skeletal characteristics.
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Matsumura, H., Tanijiri, T., Kouchi, M. et al. Global patterns of the cranial form of modern human populations described by analysis of a 3D surface homologous model. Sci Rep 12, 13826 (2022). https://doi.org/10.1038/s41598-022-15883-3
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Copyright © The Author(s) 2022. Tis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. Te images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from
the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The attached file is the pubished version of the article.
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2045-2322
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2045-2322
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openAccess