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Word Entries containing the term: “sf
single-fiber electromyography, single fiber electromyography, SF-EMG Neurology
1. The study by microelectrode recording of the electrical activity of individual muscle fibers.
2. A test used to evaluate the activity of single fibers of selected muscles; for example, common extensor of fingers, displayed as an action potential on an cathode-ray oscilloscope; SF-EMG may detect early defects in neuromuscular junction diseases; such as, myasthenia gravis, Eaton-Lambert syndrome, or botulism.