Our sensory systems constantly receive a tremendous amount of information, but only information that is attended can be well processed, because perceptual capacity is limited (Lavie, 2005). It has been suggested that selective attention upregulates task-relevant stimulus processing (target facilitation) and downregulates task-irrelevant stimulus processing (distractor inhibition; Baluch and Itti, 2011; Noonan et al., 2018). This attentional regulation has been shown to be influenced by expectations. For instance, in visual search, attention is biased toward spatial locations with higher probabilities of targets and away from locations with higher probabilities of distractors (Ferrante et al., 2018).