“…Compared with other EPR component, the cognitive function referred by MMN is relatively definite and the MMN is not influenced by motivational factors as easy as P300. Currently, the MMN is already used in clinic researches of preattention processing of many diseases, such as schizophrenia, depression, hearing disorder, conscious disturbance and multiple sclerosis (Kujala, Tervaniemi, & Schroger, 2007;Naatanen & Kahkonen, 2009;Takei, Kumano, Hattori, Uehara, Kawakubo, Kasai, Fukuda, & Mikuni, 2009;Roggia & Colares, 2008;Qin, Di, Yan, Yu, laureys, & Weng, 2008;Xiaosen, Yi, Bing, Li, Songlin, Lijie, Cuiping, & Lun, 2014). Early MMN researches limited in auditory pathway.…”