There are, however, a few areas where new neurons continue to be generated throughout life.

However, only 0.2% of new neurons have survived and functioned in this study.

No one really knows what these new neurons do.

If the new neurons are essential for memory and learning, then serious deficits should appear in the monkeys' performance.

They have shown that learning enhances the number of new neurons but only under certain conditions.

It did not stop making new neurons at an early age.

This is due to receptors in the system that can also influence the production of new neurons.

With this realization came the need to explain how memories could form in the absence of new neurons.

However, we now know that new neurons can be created in the postnatal brain.

Even if we grow you new neurons, they won't link together in the same way.