The Dual Neural Pathways of Genuine and Social S

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The Dual Neural Pathways of Genuine and Social Smiles - Brain usage will be reflected in Facial Muscles Series 6-2 (Limbic System) (Guillaume Duchenne) The "Pyramidal Smile" and the "Duchenne Smile" are two important concepts in neuroanatomy and psychology used to distinguish between "conscious social smiles" and "spontaneous genuine smiles." This difference is related to the dual neural pathways in the brain that control facial expressions, as shown in the diagram. When we genuinely experience emotions such as happiness, sadness, or fear, the limbic system of the brain, including the amygdala and hypothalamus, is activated. This activates the emotional centers, bypassing our conscious awareness and directly transmitting signals to the facial nerve nuclei in the brainstem. When we need to fake a social smile or intentionally make a certain expression, the signal originates from the motor cortex of the brain.