MAGNETOENCEPHALOGRAPHY: CONCEPT AND USES


Magnetoencephalography (MEG) is a functional neuroimaging technique for mapping brain activity by recording magnetic fields produced by electrical currents occurring naturally in the brain, using very sensitive magnetometers. Arrays of SQUIDs(Superconducting quantum interference devices) are currently the most common magnetometer, while the SERF(pin exchange relaxation- free) magnetometer is being investigated for future machines.