miércoles, 15 de mayo de 2013

Brain Structure, Not the Frontal Lobe, Responsible for Advanced Human Intelligence

The evolution of the human brain was as much about structure and interconnected parts as it was about increasing size, say researchers.

Using phylogenetic or 'evolutionary family tree' techniques, Professor Robert Barton from the Department of Anthropology at Durham University analyzed data developed from previous animal and human studies to examine the speed at which evolutionary biological change in the brain occurred. His results could be a game-changer when it comes to understanding how the brains of our distant ancient ancestors changed during the course of human evolution. He and his research colleagues at Durham and Reading universities have concluded that, contrary to popular scholarly conception, the frontal lobes of the brain did not evolve comparatively faster than their primate cousins after the human lineage split from the chimpanzee lineage about 5-7 million years ago. It was actually just as much, if not more, about the evolution of the overall brain structure. [...] popular-archaeology.com/

A detailed report of the study is published in the Proceedings of the National Academy of Sciences (PNAS).

Link 3: La clave de la cognición humana no está en los lóbulos frontales
Robert A. Barton y Chris Venditti han analizado el tamaño de los lóbulos frontales humanos y los cambios en el volumen a lo largo de la filogenia, en comparación con otras estructuras cerebrales.
Según sus hallazgos, los cambios en los lóbulos frontales están fuertemente correlacionados con el aumento general del cerebro y el específico de las otras áreas cerebrales.
Por consiguiente, la búsqueda de las bases neuronales de la singularidad cognitiva humana debe centrarse menos en los lóbulos frontales, y más en redes neuronales distribuidas.

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