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Post by Lone Wanderer on Jan 31, 2018 8:07:20 GMT
Source: Modern human brain organization emerged only recentlyHomo sapiens fossils demonstrate a gradual evolution of the human brain towards its modern globular shape Brain shape evolution in Homo sapiens: brain shape of one of the earliest known members of our species, the 300,000 year-old cranium Jebel Irhoud 1 (left). Brain shape, and possibly brain function, evolved gradually. Brain morphology has reached the globularity typical for present day humans suprisingly recently (right).
Researchers from the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, reveal how and when the typical globular brain shape of modern humans evolved. Their analyses based on changes in endocranial size and shape in Homo sapiens fossils show that brain organization, and possibly brain function, evolved gradually within our species and unexpectedly reached modern conditions only recently.
Evolutionary changes in early brain development
In present-day humans, the characteristic globular shape of the braincase develops within a few months around the time of birth. Philipp Gunz explains, "The evolution of endocranial shape within Homo sapiens suggests evolutionary changes of early brain development -- a critical period for neural wiring and cognitive development." The researchers therefore argue that evolutionary changes to early brain development were key to the evolution of human cognition. Jean-Jacques Hublin, co-author and director of the Department of Human Evolution at the Max Planck Institute in Leipzig, says: "The gradual evolution of modern human brain shape seems to parallel the gradual emergence of behavioral modernity as seen from the archeological record." The new findings are in agreement with recent genetic studies that show changes in genes related to brain development in our lineage since the population split between Homo sapiens and Neanderthals. They add to the accumulating archeological and paleoanthropological evidence demonstrating that Homo sapiens is an evolving species with deep African roots and long-lasting gradual changes in behavioral modernity, brain organization, and potentially brain function.
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Post by Elizabeth on Jan 31, 2018 8:41:16 GMT
African, yup! I'm black like you xD
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Post by Lone Wanderer on Jan 31, 2018 8:45:56 GMT
African, yup! I'm black like you xD While I'm a legit black man, you are just a wigger.
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Post by Elizabeth on Jan 31, 2018 8:54:51 GMT
African, yup! I'm black like you xD While I'm a legit black man, you are just a wigger. Uh huh. You're as black as the sun actually.
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Post by Polaris on Jan 31, 2018 9:02:17 GMT
through a lot of archaeological evidence, Africa is the cradle of humanity.
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Post by Διαμονδ on Jan 31, 2018 9:53:47 GMT
I remember it!
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Post by Διαμονδ on Jan 31, 2018 9:55:37 GMT
through a lot of archaeological evidence, Africa is the cradle of humanity. In ancient times, the continents were different! Do not forget this and the landscapes often changed!
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Post by Polaris on Jan 31, 2018 10:29:10 GMT
you are right Diamond. the evidence has been found in areas included in today's Africa.
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