Fig 1. Median SCRs for each of the 15 tone trials, stratified for the low shock group (<5 shocks, N = 99 patients) and the high shock group (5 shocks, N = 35 patients). The graph demonstrates significantly heightened median values for all but the first two trials. Error bars represent the 25th percentile in the low shock group and the 75th percentile in the high shock group (Mann-Whitney U test: *p < .10; **p < .05; ***p < .01).