N-Methyl-d-Aspartic Acid is primarily used in neuroscience research as a selective agonist for NMDA receptors. It plays a crucial role in studying excitatory neurotransmission and synaptic plasticity. Researchers utilize it to investigate the mechanisms underlying learning, memory, and neurological disorders such as epilepsy, stroke, and neurodegenerative diseases. Additionally, it is employed in experimental models to induce excitotoxicity, helping to understand cell death pathways in the brain. Its application extends to pharmacological studies aimed at developing therapeutic agents targeting NMDA receptor dysfunction.