Scientists Study Smiles: Zygomaticus Major Muscle Key to Genuine and Deliberate Smiles
Scientists use facial expression analysis to study smiles, measuring activity in the zygomaticus major muscle. This muscle, located between the lips and cheeks, plays a key role in both genuine and deliberate smiles.
Researchers employ methods like the Facial Action Coding System or software like Affectiva to analyse facial expressions. Psychophysiological parameters, particularly fEMG recordings of the zygomaticus major, help distinguish between genuine (Duchenne) and deliberate smiles. A Duchenne smile involves activation of both the zygomaticus major and the orbicularis oculi, while a non-Duchenne smile involves only the zygomaticus major.
Stefanie M. Kragel and Lisa Feldman Barrett, authors of a 2018 study, compared fEMG and Affectiva in recording zygomaticus major activity. Their work highlights the importance of this muscle in understanding different types of smiles. Automatic facial expression analysis can detect all facial muscle movements, providing insights into complex facial expressions and emotions.
The zygomaticus major is crucial for understanding smiles and emotional expression. Its activity, measured through methods like fEMG and facial expression analysis, helps researchers differentiate between genuine and deliberate smiles. Further study using these methods can enhance our understanding of human emotion and expression.
Read also:
- Parliamentary Meetings in the Federal Diet of Germany this Week
- Council approves resolution to remove objections for organ donations at federal level
- Encouraging Healthy Indoor Workplaces through LEED Material Methods: USGBC LEED Green Associate
- Understanding Craniosynostosis: Essential Facts and Insights
