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Joined: Jan 2001
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Carpal Tunnel
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Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
From "engines" The French neurologist Guillaume Duchenne mapped 100 facial muscles in 1862. In the course of that work, he had something to say about smiling. He pointed out that false, or even half-hearted, smiles involved only muscles of the mouth. But "the sweet emotions of the soul," he said, activate the pars lateralis muscle around the eyes.
Since then, physiologists have talked about the Duchenne marker in a smile. It's a slight crinkling of crows-feet and a droop in the eyelid toward the temples -- along with a lift of the cheeks and the corners of the mouth. You know the sign. You recognize true delight in a friend's face.
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10/28/02 05:16 PM
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