Figure 1.

Mean arousal (top panel) and valence (bottom panel) ratings of unpleasant images as a function of PTSD and the trauma-relatedness of the image in the Vietnam-combat veterans (n = 36). Ratings of arousal range from “very calm” (1) to “very activated” (9). Ratings of valence range from “very unpleasant” (1) to “very pleasant” (9) with neutral valence reflected at the mid-point of the scale. Error bars reflect standard error.