“….” The MMN is argued to be generated not by the low-level acoustic analysis of the deviant (e.g., [s]), but by the contrast between the deviant and the memory representation of the standard (for reviews, see Näätänen, Jacobsen, & Winkler, 2005; Näätänen, Paavilainen, Rinne, & Alho, 2007). Detection of a physical contrast is, of course, relatively easy, and many species of nonhuman animals can show MMN responses (see reviews in Harms et al, 2014; Näätänen et al, 2007; Walker et al, 2001). Interestingly, however, the MMN may also be elicited by the detection of differences between highly abstract memory representations.…”