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Determinants of the shape of the neurocranium sought through analyses of correlations between the neurocranium and limb bones

Research Project

Project/Area Number 13640716
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 人類学(含生理人類学)
Research InstitutionNational Science Museum, Tokyo

Principal Investigator

MIZOGUCHI Yuji  National Science Museum, Tokyo, Department of Anthropology, Chief Curator, 人類研究部, 室長 (00110106)

Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2003: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2002: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2001: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywordsbrachycephalization / cranial length / cranial breadth / postcranial bones / upper limb bones / lower limb bones / principal component analysis / bootstrap method / 体幹体肢骨 / 国際情報交換 / オーストラリア
Research Abstract

The superior view of the Japanese skull has changed from the anteroposteriorly long shape in the medieval times to the short one at the present. This phenomenon is called brachycephalization. The causes for this brachycephalization, however, have not been determined yet. Since 1992, the present author has examined correlations between cranial and postcranial measurements as a step toward clarifying the causes for brachycephalization and found that, while cranial breadth has no consistent association with any measurements of the vertebrae, ribs, and shoulder girdle, cranial length is strongly associated with the sagittal and transverse diameters of the vertebral bodies, and with sacral breadths. In the present study, the correlations between neurocranial measurements and those of the upper and lower limb bones were further examined for the same purpose.
In result, the present analyses and previous findings suggest that the chronological changes of three variables, i.e., the shape of the pelvis, body size, and the amount of skeletal muscles, can cause brachycephalization through their influence on the changes in maximum cranial length. Further, it is possible to consider that the causes for the changes in such physical variables, especially in body size and the amount of skeletal muscles, are chronological changes in nutrition intake and the amount of labor. Of course, the correspondency of these possible causes with the morphological changes in the skull should further be investigated in the future.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Mizoguchi, Yuji: "Strong associationsbetween cranial length and humeral measurements: Towardthe solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 27. 19-36 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Yuji: "Associations between neurocranial and ulnar/radial measurements: Towardthe solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 28. 1-14 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Yuji: "Significant associations between cranial length and femoral measurements: Towardthe solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 29. 11-23 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Yuji: "Associations between the neurocranium and the leg bones: Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 29. 25-39 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Y.: "Strong associations between cranial length and humeral measurements : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 27. 19-36 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Y.: "Associations between neurocranial and ulnar/radial measurements : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 28. 1-14 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Y.: "Significant associations between cranial and femoral measurements : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 29. 11-23 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Y.: "Associations between the neurocranium and the leg bones : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 29. 25-39 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Mizoguchi, Yuji: "Significant associations between cranial length and femoral measurements : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 29. 11-23 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Mizoguchi, Yuji: "Associations between the neurocranium and the leg bones : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 29. 25-39 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Mizoguchi, Yuji: "Associations between neurocranial and ulnar/radial measurements : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 28. 1-14 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Mizoguchi, Yuji: "Strong associations between cranial length and humeral measurements : Toward the solution of the brachycephalization problem"Bulletin of the National Science Museum, Tokyo, Series D. 27. 19-36 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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