Publication :
Toward dynamic pain expressions in avatars : perceived realism and pain level of diffrent action unit orders

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Date
2019-02-07
Direction de publication
Direction de recherche
Titre de la revue
ISSN de la revue
Titre du volume
Éditeur
Elsevier
Projets de recherche
Structures organisationnelles
Numéro de revue
Résumé
The facial expression of pain can be decomposed in three sets of Action Units (AUs), the smallest discriminating facial movements: Brow lowering (B), Nose wrinkling + Upper lip raising (N), and Orbit tightening + Eyelid closure (O). This study compared the perception of realism and pain level from different onset orders of AUs in avatars. Seven videos of facial expressions of pain were created with four different avatars (2 women): six sequential onsets combining the three sets of AUs and one synchronized onset. 45 healthy adults (22 women; aged 23.6 ± 5.2 years) rated the realism of facial movements, and the level of intensity and unpleasantness of perceived pain. A more realistic expression was associated with the onset of O before or at the same time as N, a more intense expression was associated when B occurred last, and a higher level of unpleasantness was associated with the onset of N before B. Therefore, the sequence ONB yielded the highest ratings on both measures of realism and pain levels. These findings describe the perceived content of different orders of facial movements that could contribute to the creation of realistic pain-expressing virtual agents designed to study human-computer interactions.
Description
Revue
Computers in human behaviour, Vol. 96, 95–109 (2019)
DOI
10.1016/j.chb.2019.02.001
URL vers la version publiée
Mots-clés
Dynamic facial expressions , Pain of others , Virtual agents , Action Units , Perception , Behavioral realism
Citation
Type de document
article de recherche