HENNING DALHOFF / SCIENCE PHOTO LIBRARY HENNING DALHOFF / SCIENCE PHOTO LIBRARY
Neurogenesis. Artwork of an adult brain, revealing neurogenesis (nerve cell synthesis) sites. It was once believed that adult brains could not synthesise new neurons (nerve cells), but research has shown that these areas do regularly generate neurons in adulthood. This diagram shows the rostral migratory stream (RMS), where neuron precursors in the subventricular zone (SVZ) of the lateral ventricles (bright blue) migrate to the olfactory bulb (the scent-processing centre, purple, left) to form sensory neurons. The other main site of neurogenesis is in the subgranular zone (SGZ) in the dentate gyrus of the hippocampus (brown).
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