cluster located in between the right insula and the HG in our wholebrain
analysis, revealed significant overall effects of repetition. Previous
research indicates that frontal generators contribute to the P50m response and that neuronal activity contributing
to amplitude reduction or enhancement with stimulus repetition, a
phenomenon known as “sensory gating”, is localized in the frontal
lobeWhile generators
located in supratemporal planes are oriented tangentially, frontal
sources with a radial orientationmight be less suitable for source localization
usingMEG,whichmay explainwhy no clear effects of repetition
were found in frontal areas.