Fig. 3

a Scalp distribution of the EEG signal during frequency-tagging (baseline subtracted amplitudes in µV). Frequency-tagged neural responses to the periodically presented face parts are shown for each group, as well as the differential response for “upper” minus “lower” face part. The analysis of the response to both types of stimuli focused on an occipital region of interest (O1, O2, Iz, Oz), indicated with the open circles in the upper left scalp topography. b Averaged baseline-subtracted amplitudes for each stimulus condition (upper face part versus lower face part) for each group. The mean, SEM and the individual subject data are displayed in black and orange for the ASD and TD group, respectively. In blue, boxplots depict means and interquantile ranges of the posterior estimates of the Bayesian model