FIGURE 2.
Schematic of a generalized PAA trial and overall results. (A) One trial of a series of trials. The pre-event (Tpre), event (Tevent), and post-event (Tpost) durations are on the order of seconds. The physiological activities of interest are recorded continuously throughout the series of trials. (B) PAA effect. Data recorded during Tpre are baselined to a period preceding Tpre and are most often averaged across trials within each event type to provide an average Tpre response for the emotional event and an average Tpre response for the neutral event. The PAA effect is usually defined by the difference between these two averaged changes in Tpre physiology.