“…Visual MMN to changes in facial expressions has been reported several times in healthy participants (Astikainen, Cong, Ristaniemi, & Hietanen, 2013;Astikainen & Hietanen, 2009;Kimura, Kondo, Ohira, & Schr€ oger, 2012;Li, Lu, Sun, Gao, & Zhao, 2012;Susac, Ilmoniemi, Pihko, & Supek, 2003;Zhao & Li, 2006). Because both depression and BP are associated with abnormalities in emotion processing, and since depression affects social cognition (Wolkenstein, Sch€ onenberg, Schirm, & Hautzinger, 2011), vMMN seems to be a feasible tool to study altered emotion processing in this disorder. It is thus surprising that there is only one report on vMMN to facial expressions in depressed participants (Chang, Xu, Shi, Zhang, & Zhao, 2010).…”