Unpacking the N400 effect with MEG

Many lexical and sentential manipulations result in modulations of the ERP
component known as the N400, but the functional interpretation of these
'N400 effects' is still an object of much disagreement. If N400 effects
reflect a combination of multiple functionally distinct sources, the
increased spatial resolution of MEG may help to separate them. I will
present data from MEG and simultaneously recorded EEG/MEG that speak to
these issues.