Numerous studies have attempted to characterize the production of new neurons in the dentate gyrus of adults. Adult neurogenesis can be divided into three main cellular events: cell proliferation, neuronal differentiation, and cell survival (Fig 1) (Christie & Cameron, 2006). Each of these events has been well-characterized, at least in studies of rodents, and each provides a plastic process that has the potential to be influenced by stress and glucocorticoids.
