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Adult hippocampal neurogenesis is a highly dynamic process in which new cells are born, but only some of which survive. Of late it has become clear that these surviving newborn neurons have functional roles, most notably in certain forms of memory. Conventional methods to look at adult neurogenesis are based on the quantification of the number of newly born neurons using a simple cell counting methodology...
Persistent neuronal activity lasting seconds to minutes has been proposed to allow for the transient storage of memory traces in entorhinal cortex and thus could play a major role in working memory. Nonsynaptic plateau potentials induced by acetylcholine account for persistent firing in many cortical and subcortical structures. The expression of these intrinsic properties in cortical neurons involves...
Adult neurogenesis mainly occurs in two brain regions, the subventricular zone and the dentate gyrus (DG) of the hippocampus. Neuropeptide Y (NPY) is widely expressed throughout the brain and is known to enhance in vitro hippocampal cell proliferation. Mice lacking either NPY or the Y1 receptor display lower levels of cell proliferation, thereby suggesting a role for NPY in basal in vivo neurogenesis...
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