Fig. 1

Schematic of the experimental paradigm. The experiment, in a full factorial, event-related design, consisted of 4 trial types, depending on the valence of the image (Negative/Neutral) and the instruction (Look/Decrease). Following each image, subjects rated how much negative affect they felt when viewing the picture. Trials were separated by a fixation cross lasting 4–10 s. For more details, see Methods and Corbalán et al. (2015)