The subependymal zone is a cell layer surrounding the lateral ventricles in the brain. This region contains adult neural stem cells which have the potential to generate new neurons and glial cells. It is an adult version of the embryonic forebrain germinal zone.
Ilias Kazanis at the University of Cambridge compares the subependymal zone to a beating heart which "continuously sends new cells to different areas of the brain: neurons to the olfactory bulbs and glial cells to the cortex and the corpus callosum." [1]