Postpleistocene evolution of the brain

The number of extraneurons (N c ) has been calculated with the formulae of Jerison ('63) for prehistoric population samples to check the hypothesis that N c may not only increase by increasing of cranial capacity but also by decreasing of body‐weight (gracilisation). Body weight of skeletal populations has been estimated by the formula of Debetz ('67). Samples from the Western part of Europe and Egypt support the hypothesis, but Eastern europoid samples display opposite relations: N c increases with robusticity. It seems (as Jerison already suggested) that N c is no measurement of the level of behavior in the populations of H. sapiens ; but it may point towards allometric differences between West and East, which are also known for other characters

Allometry · Archaeology · Biology · Body proportions · Body weight · Geography · Geometry · Homo sapiens · Population · Prehistory · Skull · Sociology · Zoology · Anatomy · Demography · Evolution and Paleontology Studies · Mathematics · Paleontology · Pleistocene-Era Hominins and Archaeology

• Hominid brain evolution

  Open Access•D Falk•American Journal of Physical…•1980

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• The brain in hominid evolution

  Open Access•Phillip V Tobias•The brain in hominid evolution•1971

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