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. 2020 Apr 7;14:70. doi: 10.3389/fnhum.2020.00070

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Copyright © 2020 Flynn, Effraimidis, Angelopoulou, Kapetanios, Williams, Hemanth and Towell.

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(s) 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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Overview of the study protocol. The top row shows the participant together with the facial landmark points assigned by the iMotions facial recognition algorithm and a screen with instructions. The middle row shows the GSR and the Affdex Facial expression metrics. The bottom row shows in a timeline the response of the participant per image, and the Affective Slider, which, as can be seen in Figure 1, measures arousal (top) and pleasure (bottom) on a continuous scale. Due to copyright issues associated with the IAPS images, all images at the bottom have been blurred.