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. 2023 Mar 6;378(1875):20210472. doi: 10.1098/rstb.2021.0472

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© 2023 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — Manual affect ratings by face viewer averaged for all participants are plotted versus the averaged automated intensity measures of three representative AUs [78] from the Movie Watcher: Lip Corner Pull (12) (a), Lips Part (25) (b) and Chin Raiser (17) (c). Each dot represents a 15 s task block. The y-axis shows average affect rating of the Face Watcher based on the Movie Watcher's facial expression. The x-axis shows the AU intensity obtained by OpenFace for the 15 s block. The vertical error bars indicate the inter-rater reliability and the horizontal error bars indicate the variation in the facial stimuli presented to the Face Watcher. In spite of the highly variable facial expressions, Face Watchers consistently rated valence and intensity in accordance with expectations of movie types.