Smiling makes people more likely to see happiness in expressionless faces

Feb 20 2024University of Essex

A painless current manipulated muscles momentarily into action – creating a short uncontrollable smile. Dr Korb hopes the research can explore potential treatments for depression or disorders that affect expression, like Parkinson's and autism. Related StoriesDr Korb used a modernized version of a technique first developed in the 19th century by the French physician Duchenne de Boulogne.

They were shown digital avatars and asked to assess whether they looked happy or sad. In half the trials, smiling muscles were activated at the onset of the face.

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