In humans, new neurons are continually born throughout adulthood in two regions of the brain:
· The subgranular zone (SGZ), part of the dentate gyrus of the hippocampus.
· The striatum; however the adult-born neurons are a type of interneuron, not a type that projects to other brain areas.[5]
In other species of mammals, particularly rodents, adult-born neurons also appear in the olfactory bulb. In humans, however, few if any olfactory bulb neurons are generated after birth.