Top-down attention in the face-processing network: an MRI-guided MEG study using multiple simultaneous frequency tags

Neuroimaging and electrophysiology have revealed multiple cortical face-selective regions that are spatially and functionally separable and form a distributed cortical network specialized for face perception. The aim of the present study was to investigate this functional specialization of the areas OFA, FFA, and STS by demonstrating the differential entrainment with the respective tagging-frequencies embedded in a face compound stimulus, as well as to investigate the attentional modulation of the related neural activations at those specific frequencies. For this, we used a frequency-tagging paradigm that allowed for independently frequency-tagging various parts of a face (eyes, mouth) as well as rhythmic changes in facial identity.