Neurogenesis is the process by which new neurons, or nerve cells, are formed in the brain. This process primarily occurs in the hippocampus, a region associated with memory and learning. Neurogenesis plays a crucial role in brain plasticity, allowing the brain to adapt and reorganize itself in response to new experiences. Research has shown that factors such as exercise, learning, and environmental enrichment can enhance neurogenesis, while stress and aging may hinder it. Understanding neurogenesis is important for developing potential treatments for conditions like depression and Alzheimer's disease, as promoting the growth of new neurons may improve cognitive function and emotional well-being.