High-resolution surface electromyographic activities of facial muscles during the six basic emotional expressions in healthy adults: a prospective observational study

High-resolution facial surface electromyography (HR-sEMG) is suited to discriminate between different facial movements. Whether HR-sEMG also allows a discrimination among the six basic emotions of facial expression is unclear. 36 healthy participants (53% female, 18–67 years) were included for four...

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Bibliographic Details
Published in:Scientific reports 2023-11, Vol.13 (1), p.19214-19214, Article 19214
Main Authors: Guntinas-Lichius, Orlando, Trentzsch, Vanessa, Mueller, Nadiya, Heinrich, Martin, Kuttenreich, Anna-Maria, Dobel, Christian, Volk, Gerd Fabian, Graßme, Roland, Anders, Christoph
Format: Article
Language:English
Subjects:
631/477/2811
692/617/375
Activity patterns
Electrodes
Electromyography
Emotions
Face
Humanities and Social Sciences
multidisciplinary
Muscle contraction
Muscles
Observational studies
Science
Science (multidisciplinary)
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Summary:High-resolution facial surface electromyography (HR-sEMG) is suited to discriminate between different facial movements. Whether HR-sEMG also allows a discrimination among the six basic emotions of facial expression is unclear. 36 healthy participants (53% female, 18–67 years) were included for four sessions. Electromyograms were recorded from both sides of the face using a muscle-position oriented electrode application (Fridlund scheme) and by a landmark-oriented, muscle unrelated symmetrical electrode arrangement (Kuramoto scheme) simultaneously on the face. In each session, participants expressed the six basic emotions in response to standardized facial images expressing the corresponding emotions. This was repeated once on the same day. Both sessions were repeated two weeks later to assess repetition effects. HR-sEMG characteristics showed systematic regional distribution patterns of emotional muscle activation for both schemes with very low interindividual variability. Statistical discrimination between the different HR-sEMG patterns was good for both schemes for most but not all basic emotions (ranging from p > 0.05 to mostly p 
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-45779-9