“…Recent work has also shown that the facial EMG is sensitive to affective processes during cognitive tasks. In particular, it has been shown that the corrugator is reliably activated by errors (Elkins‐Brown, Saunders, He, & Inzlicht, ; Elkins‐Brown, Saunders, & Inzlicht, ; Lindström, Mattson‐Mårn, Golkar, Olsson, ; Dignath, Berger, Spruit, & van Steenbergen, ). The corrugator also responds to low levels of processing fluency, for example, if stimuli are difficult to process due to perceptual or conceptual features such as a low figure‐ground contrast, short presentation duration, or low semantic coherence (Cannon, Hayes, & Tipper, ; Forster, Leder, & Ansorge, ; Gerger, Leder, Tinio, & Schacht, ; Topolinski, Likowski, Weyers, & Strack, , Winkielman & Cacioppo, ).…”