French Neurologist Duchenne de Boulogne Discovering How to Identify a True Smile, the Reason Fraudulent Smiles Can be Identified, and the Reason Genuine Smiles Can be Identified

French scientist Duchenne de Boulogne figured out how to tell a fake smile from a genuine smile. Fake smiles don't involve the eyes or wrinkling around the eyes because they're controlled by the motor cortex. Genuine smiles include the eyes and wrinkles around the eyes because the amygdala is engaged...

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