Relative changes to brain regions may have played role in evolution

03/28/2013 | LiveScience.com

The difference between humans and other primates may be linked to changes in brain regions, rather than brain size, according to a study published in the Proceedings of the Royal Society B. The findings concluded that changes in the size of certain areas of the brain accounted for about 76% of evolutionary changes, and that a massive change in the prefrontal cortex was key in the great ape evolution. "It's very suggestive that connectivity of prefrontal cortex has been a particularly strong driving force in ape and human brains," said Chet Sherwood, an anthropologist who was not involved with the study.

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