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6 hours ago
Even after ancient humans took their first steps out of Africa, they still unexpectedly may have possessed brains more like those of great apes than modern humans, a new study suggests.
For decades, scientists had thought modern humanlike organization of brain structures evolved soon after the human lineage
SN: 3/4/15). But an analysis of fossilized human skulls that retain imprints of the brains they once held now suggests such brain development occurred much later. Modernlike brains may have emerged in an evolutionary sprint starting about 1.7 million years ago, researchers report in the April 9
Science.
What sets modern humans apart most from our closest living relatives, the great apes, is most likely our brain. To learn more about how the modern human brain evolved, the researchers analyzed replicas of the brain’s convoluted outer surface, re-created from the oldest known fossils to preserve the inner surfaces of early human skulls. The 1.77-million to 1.85-
Tiny Blobs of Brain Cells Could Reveal How Your Mind Differs From a Neanderthalâs
Researchers grew clusters of brain cells in the lab with a gene carried by our ancient ancestors.
A cross section of a human brain organoid showing the formation of the cortical plate, the embryonic precursor of the cerebral cortex.Credit.Muotri Lab/UC San Diego
Feb. 11, 2021
In recent years, scientists have figured out how to grow blobs of hundreds of thousands of live human neurons that look â and act â something like a brain.
These so-called brain organoids have been used to study how brains develop into layers, how they begin to spontaneously make electrical waves and even how that development might change in zero gravity. Now researchers are using these pea-size clusters to explore our evolutionary past.