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Updated: May 12, 2026

Using Facial Electromyography to Assess Facial Muscle Reactions to Experienced and Observed Affective Touch in Humans
Published on: March 15, 2019
Relationships among facial mimicry, emotional experience, and emotion recognition
Wataru Sato1, Tomomi Fujimura, Takanori Kochiyama
1The Hakubi Project, Primate Research Institute, Kyoto University, Aichi, Japan. sato.wataru.4v@kyoto-u.ac.jp
Background:
The relationships between facial mimicry and subsequent psychological processes remain unclear. We hypothesized that the congruent facial muscle activity would elicit emotional experiences and that the experienced emotion would induce emotion recognition.
Methodology/Principal Findings:
To test this hypothesis, we re-analyzed data collected in two previous studies. We recorded facial electromyography (EMG) from the corrugator supercilii and zygomatic major and obtained ratings on scales of valence and arousal for experienced emotions (Study 1) and for experienced and recognized emotions (Study 2) while participants viewed dynamic and static facial expressions of negative and positive emotions. Path analyses showed that the facial EMG activity consistently predicted the valence ratings for the emotions experienced in response to dynamic facial expressions. The experienced valence ratings in turn predicted the recognized valence ratings in Study 2.
Conclusion:
These results suggest that facial mimicry influences the sharing and recognition of emotional valence in response to others' dynamic facial expressions.
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