N-Acetyl-L-aspartic acid is primarily used in neuroscience research as a marker for studying brain metabolism and function. It is often measured in magnetic resonance spectroscopy (MRS) to assess neuronal health and detect abnormalities in conditions such as brain tumors, multiple sclerosis, and neurodegenerative diseases like Alzheimer's. Additionally, it plays a role in understanding the biochemical pathways related to the synthesis and breakdown of neurotransmitters, aiding in the exploration of neurological disorders. Its presence in the brain also helps researchers investigate the impact of metabolic changes on cognitive and motor functions.