Neck MusclesSpasmMusclesMuscle SpasticityOccipital BoneSpasms, InfantileElectromyographyNeckCervical AtlasMuscle, SkeletalNeuromuscular AgentsMuscle ProteinsMuscle, SmoothMotor NeuronsSpinal Cord InjuriesHead MovementsMuscle, Smooth, VascularMuscle Fibers, SkeletalMuscle ContractionHemifacial SpasmBotulinum Toxins, Type ANeck PainFacial MusclesMuscle DevelopmentHead and Neck NeoplasmsTorticollisHeadSciatic NerveMuscle FatigueMuscle Fibers, Fast-TwitchCoronary VasospasmMuscle DenervationMuscle Fibers, Slow-TwitchVibrationMyocytes, Smooth MuscleMitochondria, MuscleIsometric ContractionLabyrinth DiseasesPeripheral NervesOculomotor MusclesProprioceptionEsophageal Spasm, DiffuseElectric StimulationPostureAccelerationMastoidMuscle RelaxationMuscle SpindlesMuscle, StriatedNerve FibersMuscle WeaknessRespiratory MusclesOptic NervePapillary MusclesAbdominal MusclesQuadriceps MuscleMasticatory MusclesMuscle CellsNerve RegenerationMasseter MuscleWhiplash InjuriesBiomechanical PhenomenaFacial NerveTegmentum MesencephaliCatsTime FactorsIntercostal MusclesErgonovineAnti-Dyskinesia AgentsMuscular AtrophyMovementNerve EndingsSatellite Cells, Skeletal MuscleNerve BlockFixation, OcularPectoralis MusclesCervical VertebraeTibial NerveAngina Pectoris, VariantMedian NerveSural NerveMuscular DiseasesNerve CrushUlnar NerveVestibule, LabyrinthPeripheral Nerve InjuriesTemporal MuscleHindlimbRabbitsPsoas MusclesFemoral NerveNeck InjuriesRats, Sprague-DawleyCalciumNerve Compression SyndromesMyofibrilsCells, CulturedPsychomotor PerformancePharyngeal MusclesSpinal Nerves