Figure 1.

Overview of the stimulus creation procedure carried out with every patient. The upper row represents the creation process for the individualized pictures, while the lower row represents the selection process for the standardized pictures. IAPS stands for “International Affective Picture System” (Lang et al., 2008); MOCSS stands for “Maudsley Obsessive-Compulsive Stimuli Set” (Mataix-Cols et al., 2009). Darker color shades represent higher stimulus intensities. The photographs depicted here are pictures taken by a participant of the OCD group (written informed consent for publication has been obtained). The white numbers above the photographs represent the stimulus intensity (the hierarchy level) of each picture. “Computerized image selection” refers to the image selection process described in the Stimuli and Design section.