Figure 4.
The top display shows grand-averaged ERP waveforms to the faces display by Prime condition (neutral, threat) and Group (HSA, LSA) taken as the average of the O1 and O2 electrode sites. The bottom display shows grand-averaged ERP waveforms to faces display onset by Prime condition (neutral, threat) and Group (HSA, LSA) taken as the average of the P3 and P4 electrode sites.