title: Functional block in the intraventricular conduction system.
mesh_terms: D000200:Action Potentials; D002037:Bundle-Branch Block / Q000503:physiopathology*; D006329:Heart Conduction System / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D011930:Reaction Time; D014630:Vagus Nerve / Q000502:physiology