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. 2016 Sep 26;12:26. doi: 10.1186/s12993-016-0110-3

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© The Author(s) 2016

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 — The time course of stimulus presentations. A series of 75 color food pictures, consisting of 15 food items (a), and a series of 75 mosaic pictures, consisting of 15 mosaic pictures of food (b), were used. The order of the picture presentation was randomized for each series, and the sequences of pictures for presentation were randomly assigned for each participant. The mosaic pictures created from the same pictures of food items were used as visual stimuli in the same sequences as the food pictures during the control sessions. The original images used to generate the mosaic pictures were not disclosed to the study participants. Each picture was presented for 2.0 s followed by a fixation cross for 2.0 s