Amplitude and duration of muscle response potentials at the beginning of a stimulation series.
D004558:Electric Stimulation; D005071:Evoked Potentials; D006225:Hand; D006801:Humans; D009119:Muscle Contraction; D009129:Muscle Tonus; D009132:Muscles / Q000502:physiology*; D014459:Ulnar Nerve / Q000502:physiology*