Magnetoencephalography: Elucidating Brain Function

Magnetoencephalography (MEG) is a functional imaging technique that measures the magnetic fields emitted by the brain with millisecond temporal resolution, from which one can reconstruct the neuronal sources of brain activity with spatial resolution of a few millimeters at the cortical level. It differs from most neuroimaging techniques, which generally display a snapshot of brain anatomy; MEG solely elucidates real-time ongoing brain function: neuronal activity. Functional MR imaging is an extremely valuable imaging technique that uses cerebral blood flow as a surrogate for neuronal activity with 3- to 5-second temporal resolution; MEG dispenses with the surrogate blood flow and just measures the brain ’s neuronal magnetic activity directly, with millisecond temporal resolution!

Source: Neuroimaging Clinics - March 31, 2020 Category: Radiology Authors: Roland R. Lee, Mingxiong Huang Tags: Preface Source Type: research