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New Advances in Single Fiber Electromyography
Abstract
The aim of this chapter is to present a general perspective of SFEMG together with a description of the anatomical, physiological, and technical aspects that are involved in the recording of single fibre action potentials (SFAPs). First, a simulation model that relates analytically the intracellular action potential (IAP) and SFAP mathematical expressions is described. Second, the most recent findings regarding the shape features of human SFAPs are outlined. Third, a description of how different types of needle electrodes affect the characteristics of the recorded potential is detailed. Fourth, an explanation of the most important effects of filtering on the SFAP characteristics is provided. Finally, a description of the principles of jitter estimation together with the most important sources of errors is presented.
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