Hi,
I'm a pediatric neurologist working on auditory evoked potentials in an infant population (0 to 24 months old). I performed cortical sources estimation on grand average auditory evoked potentials using the Minimum-norm imaging (MNI) following the tutorials in Brainstorm. Before computing the head model using OpenMEEG BEM, I performed MRI segmentation to generate BEM surfaces via Brainstorm. What is the accuracy of the localization of brain activity using this method (NMI)?
Spatial resolution depends on several factors: number and types of sensors (EEG vs MEG), data quality (noise and artifacts) and brain location (deeper regions are less resolved than superficial cortex). To give you and idea, I can recommend the following papers and related literature: