Single fiber electromyography in normal subjects: reproducibility, variability, and technical considerations.

@article{Lange1992SingleFE,
  title={Single fiber electromyography in normal subjects: reproducibility, variability, and technical considerations.},
  author={Dale J. Lange},
  journal={Electromyography and clinical neurophysiology},
  year={1992},
  volume={32 7-8},
  pages={397-402}
}
  • Dale J. Lange
  • Published 1992 in Electromyography and clinical neurophysiology
We performed 59 single fiber electromyography (SFEMG) examinations on 33 patients with spasmodic torticollis, but no other medical or neurological disorder. 14 patients were studied serially (3 examinations over 12 weeks). There was excessive jitter (greater than 55 microseconds) in 14 of 1180 fiber pairs (1.1%). 7 of the 14 abnormal fiber pairs were found at single sites (1 in 20 sites studied). Abnormal jitter occurred at more than 2 of 20 sites in only two patients, both of whom head… CONTINUE READING