During the performance of emotional tasks, results were inconsistent: Administration of oxytocin (compared to placebo) was associated with decreased amygdala activity in a group of police officers (Koch et al., 2016), while associated with increased reactivity of the right basolateral amygdala in a group of acute civilian PTSD patients (Frijling et al., 2016). This evidence concerns the gene OXT and post-traumatic stress disorder.