title: Testing upper motor neuron function in amyotrophic lateral sclerosis: the most difficult task of neurophysiology.
authors.affiliation: Institute of Physiology, Faculty of Medicine-University of Lisbon, Avenida Professor Egas Moniz, 1648-029 Lisbon, Portugal. mamedemg@mail.telepac.pt
authors.forename: Mamede
authors.initials: M
authors.lastname: de Carvalho
mesh_terms: D000818:Animals; D004576:Electromyography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D016472:Motor Neuron Disease / Q000175:diagnosis*; D009046:Motor Neurons / Q000502:physiology*; D018482:Muscle, Skeletal / Q000503:physiopathology*; D009410:Nerve Degeneration / Q000175:diagnosis*