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» » Cannabinoids promote embryonic and adult hippocampus neurogenesis

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For a long time, it was not thought to occur in adult brains — once you were grown, it was thought, all you could do was watch your brain cells die! Adult neurogenesis the creation of new brain cells in adult brains was first discovered in , but only recently has it been accepted as a general phenomenon that occurs in many species, including humans It's now widely accepted that adult neurogenesis occurs in the subgranular zone of the dentate gyrus within the hippocampus and the subventricular zone SVZ lining the walls of the lateral ventricles within the forebrain. It occurs, indeed, at a quite frantic rate — some new cells are born in the dentate gyrus every day in young adult rat brains — but under normal circumstances, at least half of those new cells will die within one or two months. The neurons produced in the SVZ are sent to the olfactory bulb, while those produced in the dentate gyrus are intended for the hippocampus.

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