For which purpose might a clinician prefer using MEG instead of EEG?

Using MEG (Magnetoencephalography) over EEG (Electroencephalography) is often preferred for its superior spatial resolution when it comes to locating sources of epileptiform activity more precisely. MEG measures the magnetic fields generated by neuronal activity, allowing clinicians to more accurately determine the exact location of brain activity compared to EEG, which captures electrical activity. This enhanced spatial resolution is crucial in epilepsy management, where precise localization of seizure foci is essential for effective treatment planning, such as pre-surgical evaluations.

In contrast, EEG provides lower spatial resolution, making it more challenging to pinpoint the specific regions of the brain responsible for the recorded activity. Thus, clinicians who are focused on accurately identifying and localizing epileptiform activity may favor MEG for its clearer and more precise mapping capabilities. This distinction is vital when considering the implications for patient care and treatment strategies in epilepsy and other neurological conditions.