Neurogenesis refers to the process of production of neurons by neural stem cells. There are different types of neural stem cells such as radial glial cells, neuroepithelial cells, intermediate neuronal precursors, basal progenitors, subgranular zone radial astrocytes and subventricular zone astrocytes. Neural stem cells are self-renewing and multipotent cells. Neurogenesis is responsible for producing all the different types of neurons within an individual. It is most active during embryonic development but continues throughout adult life. Adult neurogenesis is different from prenatal neurogenesis. Formation of new neurons in adults takes place in two regions of the brain, namely, subgranular zone and subventricular zone. This book strives to provide a fair idea about neurogenesis in adult brain and helps to develop a better understanding of the latest advances within this field. It presents researches and studies performed by experts across the globe. This book will serve as a valuable source of reference for graduate and post graduate students.