The formation of new neurons is called

• A. Synaptogenesis
• B. Myelination
• C. Neurogenesis
• D. Plasticity

Answer: (C)

The main concept being tested is naming the process by which new neurons are formed. That process is neurogenesis. Synaptogenesis refers to the creation of synapses between neurons, helping establish networks. Myelination is the development of the myelin sheath around axons, which speeds up neural signaling. Plasticity describes the brain’s ability to adapt by reorganizing connections in response to experience. Neurogenesis is especially notable during development when many neurons are produced, and in a few regions of the adult brain, such as the hippocampus, where new neurons can contribute to learning and memory. Factors like activity and environment can influence it, but the defining idea is that neurogenesis is the birth of new neurons.