Frequentist statistics
anger
The LMM on the ZM muscle resulted in a statistically significant main effect of emotion (Facial EMG by muscle, time, and drug. During AngryToHappy trials (left), facial mimicry of smiles, as shown by ZM activation and CS deactivation, was somewhat greater in the placebo condition, but no significant differences between drug groups were found. Similarly, during HappyToAngry stimuli, facial mimicry of anger was present, as shown by CS activation and ZM deactivation, but was not modulated by either drug. Error bars represent SEM. CS, corrugator supercilii muscle; ZM, zygomaticus major muscleTo investigate if facial mimicry of anger occurred in the CS muscle, and whether it differed between drug groups, a similar LMM was fitted with the log of the EMG of the CS as dependent variable. This resulted in statistically significant main effects of emotion (