DocumentCode :
1610650
Title :
Spontaneous facial mimicry in response to dynamic facial expressions
Author :
Sato, Wataru ; Yoshikawa, Sakiko
Author_Institution :
Dept. of Human & Environ. Studies, Kyoto
fYear :
2005
Firstpage :
13
Lastpage :
18
Abstract :
Based on previous neuroscientific evidence indicating activation of the mirror neuron system in response to dynamic actions, we hypothesized that facial mimicry would occur while subjects viewed dynamic facial expressions. To test this hypothesis, dynamic/static facial expressions of anger/happiness were presented to 18 subjects. The subjects´ facial actions were unobtrusively videotaped and blindly coded. In dynamic presentations, brow lowering, a prototypical action in angry expressions, occurred more frequently in response to angry expressions than to happy expressions. The pulling of lip corners, a prototypical action in happy expressions, occurred more frequently in response to happy expressions than to angry expressions in dynamic presentations. The mean latency of these actions was less than 900ms after the onset of dynamic changes in facial expression. These results indicate that dynamic facial expressions elicit spontaneous and rapid facial mimicry, which functions both as a form of intra-individual processing and as inter-individual communication
Keywords :
behavioural sciences; neurophysiology; angry expressions; dynamic facial expressions; happy expressions; interindividual communication; intraindividual processing; mirror neuron system; spontaneous facial mimicry; Brain; Electromyography; Facial muscles; Humans; Mirrors; Neuroimaging; Neurons; Prototypes; Psychology; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Development and Learning, 2005. Proceedings., The 4th International Conference on
Conference_Location :
Osaka
Print_ISBN :
0-7803-9226-4
Type :
conf
DOI :
10.1109/DEVLRN.2005.1490936
Filename :
1490936
Link To Document :
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