Figure 1.
Following a fixation cross, participants received a 5 second heat stimulus (painful and non-painful heat, pain block) or viewed for 5 seconds a picture (of neutral, pain-disgust or “pure” disgust content, disgust block). Participants rated pain, disgust as well as valence and arousal after each stimulus.
Figure 2.
Mean values (+SD) of subjective ratings (VASpain,disgust and SAMarousal, valence) during pain, pain-disgust and “pure” disgust induction. Differences of the post-hoc comparisons are displayed (ns= not significant, *<.05; **<.01; ***<.001).
Figure 3.
Examples of facial expressions elicited during pain and disgust induction.
Facial responses during pain induction (left panel), during pain-disgust induction (middle panel) and during “pure” disgust induction (right panel). The arrows point to the relevant facial actions during pain and disgust, respectively.
The subjects in the photograph have given written informed consent as outlined in the PLOS consent form, to publication of their photographs.
Figure 4.
Mean values (+SD) of those single AUs that were commonly activated during pain, pain-disgust and “pure” disgust” induction. Values are given separately for each affective state. Differences of the post-hoc comparisons are displayed (ns= not significant, *<.05; **<.01; ***<.001).
Figure 5.
Distribution of facial action combinations occurring during pain, pain-disgust and “pure” disgust induction. The sign “∅” indicates that an AU was displayed alone during the 5 seconds of stimulation. Differences between affective states (chi-square test) are displayed (ns= not significant, *<.05; **<.01; ***<.001).