magnetoencephalograph; MEG
A medical device that measures magnetic fields produced by brain activity. Technical term used in neuroscience and clinical settings.
A magnetoencephalograph is a device that non-invasively measures the brain's magnetic fields.
Magnetoencephalography is sometimes used in the diagnosis of epilepsy.
Compound of 脳 (brain), 磁 (magnetism), and 計 (meter). A modern technical coinage.