A quantitative method for the evaluation of three-dimensional structure of temporal bone pneumatization.

Journal of Human Evolution
Cheryl A Hill, Joan T Richtsmeier

Abstract

Temporal bone pneumatization has been included in lists of characters used in phylogenetic analyses of human evolution. While studies suggest that the extent of pneumatization has decreased over the course of human evolution, little is known about the processes underlying these changes or their significance. In short, reasons for the observed reduction and the potential reorganization within pneumatized spaces are unknown. Technological limitations have limited previous analyses of pneumatization in extant and fossil species to qualitative observations of the extent of temporal bone pneumatization. In this paper, we introduce a novel application of quantitative methods developed for the study of trabecular bone to the analysis of pneumatized spaces of the temporal bone. This method utilizes high-resolution X-ray computed tomography (HRXCT) images and quantitative software to estimate three-dimensional parameters (bone volume fractions, anisotropy, and trabecular thickness) of bone structure within defined units of pneumatized spaces. We apply this approach in an analysis of temporal bones of diverse but related primate species, Gorilla gorilla, Pan troglodytes, Homo sapiens, and Papio hamadryas anubis, to illustrate the potenti...Continue Reading

Citations

Mar 13, 2014·AJNR. American Journal of Neuroradiology·A IleaS Albu
Jun 22, 2014·Surgical and Radiologic Anatomy : SRA·Helena Aguiar Ribeiro NascimentoDeborah Queiroz Freitas
Oct 31, 2012·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·David HébertLaurent Marivaux
May 28, 2011·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Cheryl A Hill
Aug 25, 2020·The Journal of Laryngology and Otology·T HardcastleM Neeff
May 1, 2019·American Journal of Physical Anthropology·Margot BernardiSophie Montuire
Dec 2, 2015·Clinical and Experimental Otorhinolaryngology·Feng-Hua QinLin Yang
Mar 29, 2021·Journal of Human Evolution·Tony ChevalierJean-Jacques Hublin

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