Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"encephalization"”.
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Endocranial volume and shape variation in early anthropoid evolution
… taxa, owing to multiple events of parallel encephalization among primate clades. This thesis combines indirect and direct approaches to understanding primate evolution, by evaluating variation in the endocranial morphology of extant primates and their fossil representatives. I use a …
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Insight Into Human Brain Evolution Through Phylogenetic Analysis And Comparative Genomics
… body mass. Presumably, it is this high degree of encephalization that underlies our advanced cognitive abilities, including the skills needed for complex language and culture. Understanding how large brains evolved can shed light on what makes the human brain unique and introduce possible …
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Analysing the evolution of brain size in three clades of carnivora using model selection
… with their brain sizes, body mass, and encephalization quotients. We then ran several generalised linear models and used Aikake’s information criterion to select the best ones through model selection, then analysed the results. We found that environmental (arboreal, aquatic and …
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Big Brains and Small Teeth: a primate comparative approach to dental and mandibular reduction in hominins
… Factors linked to diet, food processing and encephalization have been suggested to be the main drivers of this trend. Stone tools and fire would have allowed Pleistocene hominins to reduce food toughness, thus relaxing the selective pressures on the masticatory apparatus. In the Holocene, the …
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Evolutionary Relationship between Life History and Brain Growth in Anthropoid Primates
… by this project state that the degree of encephalization in a species determines the growth rates, the length of the growth period, and the adult lifespan. Growing a large brain is costly and requires a prolonged period of development. However, a large brain has the benefit of reducing …
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The evolution of neuronal progenitor cell division in mammals: The role of the abnormal spindle-like microcephaly associated (Aspm) protein and epithelial cell polarity
… relative to body size. Relative brain size, or encephalization, is particularly striking among humans and their direct ancestors. Since the human-chimp split 5 to 7 million years ago, brain size has tripled in the human lineage (Wood & Collard 1999). The focus of this doctoral work is to …
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Using multivariate calibration to evaluate hominin brain/body size relationships
… in brain size, producing an overall result of encephalization. As brains got relatively larger compared to bodies it was inevitable that at some point either brains would have to get smaller along with bodies or bodies would have to start getting larger to birth large-brained offspring. After …