Both early (M/N170) and later (250 ms to 650 ms) face-related activity are localized in fusiform gyrus for simultaneously acquired MEG and EEG data

The cognitive processing of faces is one of the most demanding visual tasks for humans. It is accomplished by a network of occipitotemporal areas part of which is the fusiform gyrus. The question of how the spatiotemporal dynamics in this network take place is under vivid debate. We approached it by measuring electrophysiological face-related activity with Magnetoencephalogram (MEG) and Electroencephalogram (EEG). The anatomical generators of different processing steps were modelled by dipole localization. The first face-sensitive activity at 170 ms (EEG: N170, MEG: M170) and an activity pattern lasting from 250…