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No neurogenesis in adults?

March 9, 2018

A new study of adult brains finds zero evidence for young neurons in adults. In adult humans. Adults of other species, canaries and macaques, seem to experience neurogenesis. (Cite.) But, other studies using different approaches have found some evidence for it. Perhaps some of the experimentalists are mistaken in their practice or technique. A more interesting possibility is that there is some interesting and unknown biology happening, causing some of those approaches to show something, something not yet well understood. Science — and investigation generally — benefits from looking at same question from multiple directions. Ed Yong does a good job explaining how this piece of research conflicts with past clues, and how much uncertainty there still is on a basic question of neurophysiology.

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