Some estimates suggested 10 to 20 billion neurons for the human cerebral cortex, others some 60 to 80 billion in another region called the cerebellum. Did anyone actually know that those were the numbers of cells in the human brain? The myth seemed to be supported by statements in serious textbooks and scientific articles that “the human brain is made of 100 billion neurons and 10 times as many supporting glial cells.” I wondered if those numbers were facts or guesses. I’m glad to say that they’re wrong: We use all of it, just in different ways at different times. in neuroscience and started working in science communication, I found out that 6 in 10 college-educated people believed they only used 10% of their brains. Brains made of cells, but how many?īack when I had just received my freshly minted Ph.D. But then, I’m the one proposing that we humans revise the way we tell the story of how our species came to be.
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