We know that an area of the anterior hippocampus is the dentate gyrus, and that's where the new neurons are born in the animal studies.We can do the histology and the stains and so forth.

We know that an area of the anterior hippocampus is the dentate gyrus, and that's where the new neurons are born in the animal studies. We can do the histology and the stains and so forth.

When dissected, the treated rats turned out to have three times the usual number of newborn neurons in a brain region called the dentate gyrus.