Fig. 3.
Comparison between upright vs. inverted faces. (A) Statistical map (t test, corrected) of the difference between the FTR to upright vs. inverted faces. Electrodes belonging to a statistically significant cluster are marked with a black dot. Response to faces is significantly stronger in posterior (Pcorr < 0.003) and right frontal (Pcorr < 0.049) clusters of electrodes. (B) Power spectrum averaged over the posterior cluster (channels with P < 0.01) for the two conditions (shaded contour indicates the SEM across subjects): the tag frequency peak for upright faces is clearly higher than the one for inverted faces. (C) Statistical map of the comparison of upright vs. inverted faces at the source level (P < 0.05, uncorrected), revealing a right-lateralized network that partly overlaps with the adult face-processing network. (D) Intersubject correlation between the facelike pattern response in the posterior cluster and the age from birth (R = 0.71, P < 0.02).