3 75 Looking into troubled waters: Childhood emotional maltreatment modulates neural responses to prolonged gazing into one’s own, but not others’, eyes SUPPLEMENT S3.3 Stimuli development For the preparation of the video fragments, we recorded videos of participants during the first appointment, which was the assessment day in the lab. The videos had to have a minimal duration of 45 s and were recorded in front of a white wall. Participants were asked to wear a black t-shirt during the recordings in order to avoid distraction due to their clothing. We asked them to look directly into the camera with a friendly, but neutral, facial expression. They were also instructed not to stare, but to gaze as natural as possible and blinking was allowed. The targets depicting the unfamiliar other condition for both sexes were approached in the context of stimuli development for the current task and were selected based on age (between 45-55 years) and sex. Videos were recorded under similar circumstances as videos of the participants and written informed consent was taken to confirm their approval to use their videos in the present study.
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