Muscle RigidityNeuroleptic Malignant SyndromeDopamineMasseter MuscleSuccinylcholineMalignant HyperthermiaAlfentanilReceptors, Dopamine D2FentanylHalothaneReceptors, Dopamine D1MusclesDopamine AgonistsDopamine AntagonistsReceptors, DopamineReceptors, Dopamine D3Muscle ProteinsDopamine Plasma Membrane Transport ProteinsMuscle, SmoothMuscle, SkeletalDopamine AgentsMuscle Fibers, SkeletalMuscle, Smooth, VascularMuscle Contraction