A look inside the brains of extraordinarily sharp elderly people reveals clues about their unusual abilities. Deep in these exceptional brains were signs of what some scientists believe to be newborn nerve cells, born well into old age.
The results, published February 25 in Nature, add datapoints to the scientific debate about whether adults can make new neurons, a process called neurogenesis, and if they can, what those neurons are good for.
Whether that debate is now settled depends on who you ask — as not everyone agrees that the reported signs are from dividing neurons.
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