title: Electromyographic studies in myotonia congenita.
mesh_terms: D000200:Action Potentials / Q000187:drug effects; D000328:Adult; D002463:Cell Membrane Permeability; D004558:Electric Stimulation; D004576:Electromyography; D005071:Evoked Potentials / Q000187:drug effects; D006145:Guanethidine / Q000494:pharmacology; D006801:Humans; D008297:Male; D008564:Membrane Potentials; D009046:Motor Neurons; D009132:Muscles / Q000503:physiopathology*; D009224:Myotonia Congenita / Q000503:physiopathology*; D011342:Procainamide / Q000494:pharmacology; D014459:Ulnar Nerve / Q000503:physiopathology
chemical_list: D011342:Procainamide; D006145:Guanethidine