Agouti-Related ProteinNeuronsPro-OpiomelanocortinMelanocortinsArcuate NucleusHypothalamusNeuropeptide YAnorexiaEatingEnergy MetabolismNeurons, AfferentFeeding BehaviorLeptinMotor NeuronsProto-Oncogene Proteins c-fosMice, Transgenicgamma-Aminobutyric AcidBody WeightSignal TransductionReceptor, Melanocortin, Type 4Action Potentialsalpha-MSHDopaminergic NeuronsAgouti Signaling ProteinElectrophysiologyGABAergic NeuronsSynapsesPatch-Clamp TechniquesHippocampusNeuropeptidesCells, CulturedNerve Tissue ProteinsReceptor, Melanocortin, Type 3Ganglia, SpinalAxonsMelanocyte-Stimulating HormonesReceptors, MelanocortinSynaptic TransmissionDendritesSensory Receptor CellsReceptors, CorticotropinOlfactory Receptor NeuronsElectric StimulationCholinergic NeuronsSpinal CordCerebral CortexMembrane PotentialsNeural InhibitionNeurons, EfferentMotor Neuron DiseaseBrainImmunohistochemistryModels, NeurologicalAppetite RegulationAnimals, NewbornIntercellular Signaling Peptides and ProteinsMice, Inbred C57BLPyramidal CellsObsessive HoardingRats, WistarMedulla OblongataHyperphagiaDopamineExcitatory Postsynaptic PotentialsInterneuronsMesencephalonTime FactorsSerotonergic NeuronsCatsMice, KnockoutGlutamic AcidGreen Fluorescent ProteinsTetrodotoxinRNA, MessengerBrain StemTyrosine 3-MonooxygenaseGanglia, InvertebrateRats, Sprague-DawleyNerve NetAfferent PathwaysIn Situ HybridizationParaventricular Hypothalamic NucleusNeuritesReceptors, LeptinNitrergic NeuronsAdrenergic NeuronsCell CountGangliaCalciumNeurogenesisNeuronal PlasticitySubstantia NigraNeurogliaExcitatory Amino Acid AntagonistsGanglia, SympatheticCentral Nervous SystemThalamusNeurotransmitter AgentsCerebellumEvoked Potentials