<研究報告>脳頭蓋における体積変異の統計学的分析

概要

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In order to examine whether some parts of the neurocranium are more significant than others in adaptive sense, the approximate volumes for the eight regions of the neurocranium, i.e. right and left frontal, parietal, temporal and occipital, were first calculated on 43 early modern Japanese skulls, and coefficients of variation for the cubic roots of these volumes were estimated. They showed that the variations in the occipital portions were greater than those in the others. The correlation coefficients between right and left parts suggested that there were greater asymmetries in the temporal and occipital regions than in the frontal and parietal regions. A principal component analysis of these data revealed that the occipital regions varied relatively independent of the other regions. The adaptive significance for these features of variations in the neurocranium was discussed.
国立科学博物館の論文