Neuronal NOS, or neuronal nitric oxide synthase, is an enzyme found primarily in the nervous system. It plays a crucial role in producing nitric oxide, a signaling molecule that helps regulate various functions, including blood flow and neurotransmission. This enzyme is essential for communication between neurons and contributes to processes like learning and memory. Neuronal NOS is activated by calcium ions and calmodulin, which are important for its function. Dysregulation of neuronal NOS can lead to various neurological disorders, highlighting its significance in maintaining healthy brain function and overall neural health.