Magnetoencephalography (MEG) is a non-invasive imaging technique used to measure the magnetic fields produced by neuronal activity in the brain. It provides real-time data on brain function, allowing researchers and clinicians to observe how different areas of the brain respond during various tasks or stimuli. MEG is particularly valuable in the fields of neuroscience and clinical medicine, as it helps in the diagnosis and treatment planning for conditions like epilepsy and brain tumors. By pinpointing the location of brain activity with high temporal and spatial resolution, MEG contributes to a better understanding of brain dynamics and cognitive processes.