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. 2018 Mar 5;9:63. doi: 10.3389/fpsyt.2018.00063

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Copyright © 2018 Giel, Paganini, Schank, Enck, Zipfel and Junne.

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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Mean (±SD) percentage of total gaze duration on (A) happy vs. neutral facial expression in n = 15 patients with chronic pain disorder (CP), n = 15 individuals with depressive symptoms (DC), and n = 15 healthy individuals (HC) and (B) sad vs. neutral facial expression in n = 16 CP, n = 16 individuals with depressive symptoms (DC), and n = 16 healthy individuals (HC). All groups showed significantly longer total gaze duration on happy faces as compared to neutral faces. There was no attentional bias for sad faces (*p < 0.05).