Trigeminal NerveCranial NervesTrigeminal Nucleus, SpinalTrigeminal NucleiTrigeminal Nerve DiseasesBrain StemTrigeminal Caudal NucleusTrigeminal Nerve InjuriesTrigeminal NeuralgiaSpinal CordCell NucleusFacial PainCranial Nerve NeoplasmsTrigeminal GanglionVibrissaeSpinal Cord InjuriesAfferent PathwaysOphthalmic NerveMaxillary NerveNerve FibersRats, Sprague-DawleyNeurons, AfferentPonsDihydroergotamineSumatriptanDura MaterMasticatory MusclesElectric StimulationNeuronsCochlear NucleusCentral Nervous System SensitizationPhysical StimulationPeripheral NervesSciatic NerveMeningesNerve Compression SyndromesFacial NerveCalcitonin Gene-Related PeptideWheat Germ Agglutinin-Horseradish Peroxidase ConjugateCatsNeural PathwaysSpinal Nerve RootsDental PulpCapsaicinNociceptorsMedulla OblongataNucleus AccumbensSpinal NervesNevus of OtaProto-Oncogene Proteins c-fosMasseter MuscleMandibular NerveNeurilemmomaStilbamidinesMechanoreceptorsCranial Nerve DiseasesThalamic NucleiMigraine DisordersEvoked PotentialsSolitary NucleusOptic NerveSubstantia GelatinosaImmunohistochemistryAbducens NerveLingual Nerve InjuriesLingual NerveCerebellopontine AngleVesicular Glutamate Transport Protein 2Nerve RegenerationAction PotentialsNeuritisRaphe NucleiHypesthesiaInjections, SpinalReceptors, Calcitonin Gene-Related PeptideZoster Sine HerpeteMesencephalonCerebellar NucleiCortical Spreading DepressionSeptal NucleiActive Transport, Cell NucleusThalamusMicrovascular Decompression SurgeryCaudate NucleusParaventricular Hypothalamic NucleusBrainPetrous BoneCranial Fossa, MiddleAxonsPosterior Horn CellsSpinal Cord DiseasesDenervationAnesthesia, SpinalJawSomatosensory CortexBlinkingRats, WistarRed NucleusOlfactory NerveMagnetic Resonance Imaging