Figure 1.
Attention was manipulated between AV blocks, and participants had to respond to a visual dot and auditory beep (D0), a single digit ‘3’ (D1), or when two digits together add up to 10 (D2). Stimuli were presented concurrently during AV blocks and in isolation during unisensory blocks.
Figure 2.
Frontal-central P2 amplitudes.
Frontal-central P2 peaks are significantly larger (p<.001) to the sum of ERPs to unisensory stimuli (A+V) than to cross-modal (AV) stimuli under divided attention (D0) and easy selective attention conditions (D1) for both groups.
Figure 3.
Occipital-temporal N170 amplitudes.
Left N170 amplitude differences (±SE) between stimulus conditions (FF - FH) show a lack of higher-order MSI in the D0 condition for ASD individuals, while both groups show such an effect in the D1 condition (* = p<.05).
Figure 4.
ERPs at P7 electrode to congruent visual – auditory fear (FF) and incongruent visual fear – auditory happy (FH) stimuli in the D0, D1 and D2 conditions from the control group (above) and the ASD group (below). The arrows point to the N170 amplitudes.