Electrophysiologic evaluation of upper motor neuron involvement in amyotrophic lateral sclerosis.

@article{Drory2001ElectrophysiologicEO,
  title={Electrophysiologic evaluation of upper motor neuron involvement in amyotrophic lateral sclerosis.},
  author={Vivian Drory and Ivan Kovach and Galina B Groozman},
  journal={Amyotrophic lateral sclerosis and other motor neuron disorders : official publication of the World Federation of Neurology, Research Group on Motor Neuron Diseases},
  year={2001},
  volume={2 3},
  pages={147-52}
}
BACKGROUND The demonstration of upper motor neuron (UMN) dysfunction in patients with amyotrophic lateral sclerosis (ALS) with predominantly lower motor neuron (LMN) signs is clinically sometimes difficult. METHODS We analyzed the possible role of F and H waves in the diagnosis of UMN dysfunction in 36 patients with different clinical forms of ALS and 20 controls. In both lower limbs we evaluated F-wave persistence and the F/M ratio of tibial nerves, Hmax/Mmax ratio, vibratory and recurrent… CONTINUE READING