Universität zu Köln

Ravaja, Niklas ORCID: 0000-0003-1876-8731, Bente, Gary, Katsyri, Jari, Salminen, Mikko ORCID: 0000-0002-6528-8389 and Takala, Tapio ORCID: 0000-0002-7704-5800 (2018). Virtual Character Facial Expressions Influence Human Brain and Facial EMG Activity in a Decision-Making Game. IEEE Trans. Affect. Comput., 9 (2). S. 285 - 299. PISCATAWAY: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. ISSN 1949-3045

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Abstract

We examined the effects of the emotional facial expressions of a virtual character (VC) on human frontal electroencephalographic (EEG) asymmetry (putatively indexing approach/withdrawal motivation), facial electromyographic (EMG) activity (emotional expressions), and social decision making (cooperation/defection). In a within-subjects design, the participants played the Iterated Prisoner's Dilemma game with VCs with different dynamic facial expressions (predefined or dependent on the participant's electrodermal and facial EMG activity). In general, VC facial expressions elicited congruent facial muscle activity. However, both frontal EEG asymmetry and facial EMG activity elicited by an angry VC facial expression varied as a function of preceding interactional events (human collaboration/defection). Pre-decision inner emotional-motivational processes and emotional facial expressions were dissociated, suggesting that human goals influence pre-decision frontal asymmetry, whereas display rules may affect (pre-decision) emotional expressions in human-VC interaction. An angry VC facial expression, high pre-decision corrugator EMG activity, and relatively greater left frontal activation predicted the participant's decision to defect. Both post-decision frontal asymmetry and facial EMG activity were related to reciprocal cooperation. The results suggest that the justifiability of VC emotional expressions and the perceived fairness of VC actions influence human emotional responses.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ravaja, Niklas UNSPECIFIED orcid.org/0000-0003-1876-8731 UNSPECIFIED Bente, Gary UNSPECIFIED UNSPECIFIED UNSPECIFIED Katsyri, Jari UNSPECIFIED UNSPECIFIED UNSPECIFIED Salminen, Mikko UNSPECIFIED orcid.org/0000-0002-6528-8389 UNSPECIFIED Takala, Tapio UNSPECIFIED orcid.org/0000-0002-7704-5800 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-190502
DOI:	10.1109/TAFFC.2016.2601101
Journal or Publication Title:	IEEE Trans. Affect. Comput.
Volume:	9
Number:	2
Page Range:	S. 285 - 299
Date:	2018
Publisher:	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Place of Publication:	PISCATAWAY
ISSN:	1949-3045
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FRONTAL EEG ASYMMETRY; EMOTIONAL-REACTIONS; PREFRONTAL CORTEX; SOCIAL MOTIVES; RESPONSES; PSYCHOPHYSIOLOGY; TRUST; STATE; TRUSTWORTHINESS; ACTIVATION Multiple languages Computer Science, Artificial Intelligence; Computer Science, Cybernetics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/19050