“…Clinically, nightmares are associated with several pathologies (see Levin & Nielsen, 2007 for review) whose relationship to mirror behaviors and the mirror neuron system is under investigation. For example, nightmares are symptomatic of affective disorders, such as bipolar disorder (Beauchemin & Hays, 1996;Mehl et al, 2006) and alexithymia, both of which are linked to anomalies in the mirror neuron system (Kim et al, 2009;Moriguchi et al, 2009). Similarly, nightmares are predictive of suicidal and self-harm behaviors (Li, Lam, Yu, Zhang, & Wing, 2010;Nadorff, Nazem, & Fiske, 2011;Sjostrom, Hetta, & Waern, 2009), which may be linked to mirror processes to the extent that they are influenced by similar behaviors in others, e.g., contagious suicides (Hagihara & Abe, 2012;Jeong et al, 2012;Yang et al, 2012).…”