title: A study of the electromyographic activity of the musculus orbicularis oris.
mesh_terms: D000200:Action Potentials; D000328:Adult; D004566:Electrodes; D004576:Electromyography / Q000379:methods; D006801:Humans; D008297:Male; D009055:Mouth / Q000502:physiology*; D009132:Muscles / Q000502:physiology*; D010700:Phonetics