Electrical stimulation of facial muscles
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Electrical stimulation of facial muscles
Facial muscles being stimulated by a " reophore" (connecting wire of electric battery traversed by current) to demonstrate the mechanics of facial expression. Top left - normal. top right - joy, bottom left- ecstasy, bottom right - hatred. This technique was pioneered by French neurologist Duchenne in the 19th century.He used a rheophore to stimulate single muscles in order to study movements caused by the contraction of muscles, known as " localized faradization". He concluded that the origin of some muscular diseases e.g. Duchennes Muscular Dystrophy, is in muscle fibre rather than in neurological lesions as previously thought. He made a major contribution to the advancement of the science of muscular electrophysiology. His understanding of the conductivity of neural pathways was fundamental to the development of modern neurology
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6297461
© SHEILA TERRY/SCIENCE PHOTO LIBRARY
Duchenne Emotions Facial Muscles Stimulation Facial Expressions French Neurologist
EDITORS COMMENTS
This print showcases the groundbreaking work of French neurologist Duchenne in the 19th century. Through electrical stimulation of facial muscles, Duchenne aimed to unravel the intricate mechanics behind human expressions. The top left image represents a normal state, while the top right depicts joy, bottom left shows ecstasy, and bottom right portrays hatred. Duchenne utilized a "reophore" which is essentially a connecting wire from an electric battery that carries current to stimulate specific facial muscles. This technique allowed him to study muscle contractions caused by localized faradization – stimulating single muscles individually. His pioneering research led him to conclude that certain muscular diseases like Duchennes Muscular Dystrophy originate from muscle fibers rather than neurological lesions as previously believed. By delving into muscular electrophysiology and comprehending the conductivity of neural pathways, Duchenne made significant contributions to the advancement of modern neurology. His innovative approach shed light on how emotions are intricately linked with facial expressions and provided valuable insights into understanding various neuromuscular disorders. This remarkable print not only captures an important moment in scientific history but also serves as a reminder of how dedicated researchers like Duchenne paved the way for our present-day knowledge in this field.
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