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 neuroscience and clinical settings, as it helps in localizing brain functions related to language, movement, and sensory processing. By combining MEG with other imaging methods like functional magnetic resonance imaging (fMRI), scientists can gain a more comprehensive understanding of brain dynamics and disorders.