Facial MusclesFacial NerveFacial ParalysisFacial ExpressionSmilingZygomaNeuromuscular BlockadeNerve TransferEyebrowsFacial AsymmetryMasticatory MusclesElectromyographyForeheadGalvanic Skin ResponseSkull Base NeoplasmsMusclesNeuromuscular Nondepolarizing AgentsEyelidsParotid NeoplasmsLaryngeal MusclesMyographyAndrostanolsEmotionsMuscle ProteinsMuscle, SmoothMuscle, SkeletalMuscle Fibers, SkeletalMuscle, Smooth, VascularFacial Nerve DiseasesFacial Bones