Figure 1From: Botulinum toxin-induced facial muscle paralysis affects amygdala responses to the perception of emotional expressions: preliminary findings from an A-B-A designBehavioral performance. Behavioral data showing that angry faces are consistently rated as negative (86.5%), and happy faces are consistently rated as positive (85.7%), regardless of BTX injection. Error bars indicate standard error of the mean, which was computed by removing between subject-variability to account for the within-subject design [32].Back to article page