Role of ambiguity of facial expression in emotion estimation
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1
Tamagawa University, Brain Science Institute, Japan
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2
Hitachi, Ltd. Central Research Laboratory, Japan
For smooth social interaction, it is important to estimate an emotional state of other person throughout a facial expression and social context. In the emotion estimation, ambiguity of facial expression is important. Facial expressions lacking ambiguity tend to be mapped into one emotion valence without exception. In the contrary, ambiguous facial expressions can be interpreted with various interpretations depending on contexts, for example, emotional state of the observer. In this study, we investigated a relationship between the effect of context in emotion estimation and ambiguity of facial expression through subjective evaluation and neurophysiologic method. At first, we prepared 36 kinds of line drawing facial expression pictures (Fig.1) and calculated ambiguous degree (entropy) of each facial expression from variance of interpretations of the facial expression among subjects (Fig.2). And we investigated how the evaluations of facial expressions change depending on a context of win-loss in gambling game. Our result showed that the subjective evaluation of facial expression changed depending on both the context and ambiguous degree of facial expressions (Fig.3). And we are trying to find same phenomenon in neurophysiologic aspect now. From these results, we discuss about the role of ambiguity of facial expression in social interaction.
Conference:
10th International Conference on Cognitive Neuroscience, Bodrum, Türkiye, 1 Sep - 5 Sep, 2008.
Presentation Type:
Poster Presentation
Topic:
Emotional Processing
Citation:
Takahashi
H,
Okada
H,
Saji
R,
Ando
H and
Omori
T
(2008). Role of ambiguity of facial expression in emotion estimation.
Conference Abstract:
10th International Conference on Cognitive Neuroscience.
doi: 10.3389/conf.neuro.09.2009.01.233
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Received:
09 Dec 2008;
Published Online:
09 Dec 2008.
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Correspondence:
Hideyuki Takahashi, Tamagawa University, Brain Science Institute, Tokyo, Japan, hideman@lab.tamagawa.ac.jp