Electromyography
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
Electromyography is a method for studying the action currents of muscles in living humans during muscle work. These currents are recorded either with fine platinum electrodes inserted into the muscles being studied or with non-polarizing electrodes placed on the skin over the muscles.
Encyclopedia entry (1928–1936)
Electromyography, a method for studying the action currents of muscles in living humans during muscle work. The currents are either conducted with the help of fine platinum electrodes, which are inserted into the muscles being studied, or by applying to the skin (over the muscles being studied) electrodes that do not produce polarization phenomena. The latter, according to Piper, are glass funnels, the wide opening of which is covered with a cow or pig bladder. The funnel is filled with a saturated solution of ZnSO4, into which amalgamated zinc rods are immersed, passing through the narrow opening of the funnel into its interior. The action currents of working muscles are recorded with the help of a string galvanometer.
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Cite this page
“Electromyography.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/electromyography/