When you split the brain, do you split the person? + Humans emerged 300,000 years ago

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When you split the brain, do you split the person?

EXCERPT: [...] What, then, happens to the person? If the parts are no longer synchronised, does the brain still produce one person? The neuroscientists Roger Sperry and Michael Gazzaniga set out to investigate this issue in the 1960s and ’70s, and found astonishing data suggesting that when you split the brain, you split the person as well. Sperry won the Nobel prize in medicine for his split-brain work in 1981. How did the researchers prove that splitting the brain produces two persons, one per hemisphere? Through a clever set-up controlling the flow of visual information to the brain....

MORE: https://aeon.co/ideas/when-you-split-the...the-person

Modern humans emerged more than 300,000 years ago new study suggests

EXCERPT: [...] The authors estimate the divergence among modern humans to have occurred between 350,000 and 260,000 years ago, based on the ancient Stone Age hunter-gatherer genomes. The deepest split time of 350,000 years ago represents a comparison between an ancient Stone Age hunter-gatherer boy from Ballito Bay on the east coast of South Africa and the West African Mandinka. "This means that modern humans emerged earlier than previously thought", says Mattias Jakobsson, population geneticist at Uppsala University who headed the project together with Stone Age archaeologist Marlize Lombard at the University of Johannesburg.

MORE: https://www.eurekalert.org/pub_releases/...092517.php

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