Facial responses
pain
HEAT
ANOVAs with repeated measures (within-subject factors: heat intensity (non-painful, painful) and condition (ATD, control)) were conducted to investigate the effect of ATD on facial responses. Analyses were conducted separately for “pain relevant AUs” and for “other AUs.” Given that the facial response data were not normally distributed (left-skewed), the data was square-root transformed, as done in previous studies (Karmann et al. 