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. 2017 Jan 19;9:3. doi: 10.1186/s13195-016-0229-3

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© The Author(s). 2017

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Grand average waveforms elicited by correctly classified match objects and by correctly classified nonmatch objects from −100 milliseconds to +1000 milliseconds in (a) the normal control (NC) group, (b) the amnestic mild cognitive impairment (aMCI) group, and (c) the Alzheimer’s disease (AD) group. Electrode sites are indicated by the inserted montage (F, C, and P stand for frontal, central, and parietal regions on the scalp, respectively). Positive voltages are plotted upward