Distinct temporal features of genuine and deliberate facial expressions of surprise

Abstract The physical properties of genuine and deliberate facial expressions remain elusive. This study focuses on observable dynamic differences between genuine and deliberate expressions of surprise based on the temporal structure of facial parts during emotional expression. Facial expressions of...

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Autores principales:	Shushi Namba, Hiroshi Matsui, Mircea Zloteanu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c768993f2da84bb0ac6cca208a17b9f6
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spelling	oai:doaj.org-article:c768993f2da84bb0ac6cca208a17b9f62021-12-02T13:30:28ZDistinct temporal features of genuine and deliberate facial expressions of surprise10.1038/s41598-021-83077-42045-2322https://doaj.org/article/c768993f2da84bb0ac6cca208a17b9f62021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83077-4https://doaj.org/toc/2045-2322Abstract The physical properties of genuine and deliberate facial expressions remain elusive. This study focuses on observable dynamic differences between genuine and deliberate expressions of surprise based on the temporal structure of facial parts during emotional expression. Facial expressions of surprise were elicited using multiple methods and video recorded: senders were filmed as they experienced genuine surprise in response to a jack-in-the-box (Genuine), other senders were asked to produce deliberate surprise with no preparation (Improvised), by mimicking the expression of another (External), or by reproducing the surprised face after having first experienced genuine surprise (Rehearsed). A total of 127 videos were analyzed, and moment-to-moment movements of eyelids and eyebrows were annotated with deep learning-based tracking software. Results showed that all surprise displays were mainly composed of raising eyebrows and eyelids movements. Genuine displays included horizontal movement in the left part of the face, but also showed the weakest movement coupling of all conditions. External displays had faster eyebrow and eyelid movement, while Improvised displays showed the strongest coupling of movements. The findings demonstrate the importance of dynamic information in the encoding of genuine and deliberate expressions of surprise and the importance of the production method employed in research.Shushi NambaHiroshi MatsuiMircea ZloteanuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shushi Namba Hiroshi Matsui Mircea Zloteanu Distinct temporal features of genuine and deliberate facial expressions of surprise
description	Abstract The physical properties of genuine and deliberate facial expressions remain elusive. This study focuses on observable dynamic differences between genuine and deliberate expressions of surprise based on the temporal structure of facial parts during emotional expression. Facial expressions of surprise were elicited using multiple methods and video recorded: senders were filmed as they experienced genuine surprise in response to a jack-in-the-box (Genuine), other senders were asked to produce deliberate surprise with no preparation (Improvised), by mimicking the expression of another (External), or by reproducing the surprised face after having first experienced genuine surprise (Rehearsed). A total of 127 videos were analyzed, and moment-to-moment movements of eyelids and eyebrows were annotated with deep learning-based tracking software. Results showed that all surprise displays were mainly composed of raising eyebrows and eyelids movements. Genuine displays included horizontal movement in the left part of the face, but also showed the weakest movement coupling of all conditions. External displays had faster eyebrow and eyelid movement, while Improvised displays showed the strongest coupling of movements. The findings demonstrate the importance of dynamic information in the encoding of genuine and deliberate expressions of surprise and the importance of the production method employed in research.
format	article
author	Shushi Namba Hiroshi Matsui Mircea Zloteanu
author_facet	Shushi Namba Hiroshi Matsui Mircea Zloteanu
author_sort	Shushi Namba
title	Distinct temporal features of genuine and deliberate facial expressions of surprise
title_short	Distinct temporal features of genuine and deliberate facial expressions of surprise
title_full	Distinct temporal features of genuine and deliberate facial expressions of surprise
title_fullStr	Distinct temporal features of genuine and deliberate facial expressions of surprise
title_full_unstemmed	Distinct temporal features of genuine and deliberate facial expressions of surprise
title_sort	distinct temporal features of genuine and deliberate facial expressions of surprise
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/c768993f2da84bb0ac6cca208a17b9f6
work_keys_str_mv	AT shushinamba distincttemporalfeaturesofgenuineanddeliberatefacialexpressionsofsurprise AT hiroshimatsui distincttemporalfeaturesofgenuineanddeliberatefacialexpressionsofsurprise AT mirceazloteanu distincttemporalfeaturesofgenuineanddeliberatefacialexpressionsofsurprise
_version_	1718392940418564096

Distinct temporal features of genuine and deliberate facial expressions of surprise

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