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SFEMGSingle Fiber Electromyography
References in periodicals archive ?
Signals recorded with CN electrodes, even if visibly indistinguishable from single-fiber action potentials, may actually be composed of synchronized and near-simultaneous action potentials from more than one muscle fiber ; thus, CN electrodes cannot be used to measure FD as it is defined in SFEMG because of the larger uptake radius.
However, the cut-off jitter values obtained with the 37mm CNE are lower than jitter values reported with SFEMG electrodes for the voluntary activated periocular muscles (14).
Only patients who had SFEMG studies in the EDC muscle during the initial examination and pure ocular muscle weakness were included in the study.