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TagJunk DNA (human vs. chimp)

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Human Neurons, Brains, Much More Efficient Than Animal Ones

What was formerly thought to be “junk DNA” differs between humans and chimpanzees and plays a role in brain development

What makes humans different should be straightforward, right? We should, for example, have more complex neurons than ferrets and macaques. But we don’t. We have simpler ones: Neurons communicate with each other via electrical impulses, which are produced by ion channels that control the flow of ions such as potassium and sodium. In a surprising new finding, MIT neuroscientists have shown that human neurons have a much smaller number of these channels than expected, compared to the neurons of other mammals. MIT, “A Striking Difference Between Neurons of Humans and Other Mammals” at Neuroscience News (November 10, 2021) The paper requires a subscription. In the most extensive study of its kind, nine other mammals were studied. Larger mammals have larger Read More ›