Andrew Huberman· PhD
the the prior notion of course was that once nerve cells in the brain die they don't regenerate and for a long time it was thought you don't produce any any new nerve cells any new stem cells in the brain — and we used to think after an injury uh or uh a disease like a stroke when that tissue was damaged and you were paralyzed or you couldn't talk that there was no way to recover that those circuits were were dead