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. 2018 Aug 10;12:322. doi: 10.3389/fnhum.2018.00322

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Copyright © 2018 Styliadis, Ioannides, Bamidis and Papadelis.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Ratings of IAPS affective pictorial stimuli for arousal and valence (left panel: ratings of males, right panel: ratings of females) forming a 2D affective space. Normative valence and arousal on the x- and y-axis, respectively. Red rectangles, UHA stimuli; red circles, ULA stimuli; blue rectangles, PHA stimuli; blue circles, PLA stimuli.