MEG is a non-invasive technique used to directly measure the weak magnetic fields induced by synchronised neural activity across a brain area. MEG offers high temporal resolutions unsurpassed by other recording techniques available.
Unlike with EEG, MEG signals are not hampered by signal distortions caused by intervening structures such as the skull. Nevertheless, magnetic field changes cannot be detected in subcortical (and some deeper cortical) structures.
We are currently investigating the MEG signatures of motor learning as part of a multimodal approach to investigation of the role of GABA in the motor cortex and as part of functional recovery of motor skills.
More information on the technique of MEG can be found on the Oxford Centre for Human Brain Activity (OHBA) website.