French neurologist Guillaume-Benjamin-Amand Duchenne (right) carries out an experiment in electrophysiology by triggering a subject’s muscles with electrical probes in order to produce a given facial expression, circa mid-19th century.
French neurologist Guillaume-Benjamin-Amand Duchenne (right) carries out an experiment in electrophysiology by triggering a subject’s muscles with electrical probes in order to produce a given facial expression, circa mid-19th century.
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