2012
Bursting as a source of non‐linear determinism in the firing patterns of nigral dopamine neurons
Jeong J, Shi W, Hoffman R, Oh J, Gore JC, Bunney BS, Peterson BS. Bursting as a source of non‐linear determinism in the firing patterns of nigral dopamine neurons. European Journal Of Neuroscience 2012, 36: 3214-3223. PMID: 22831464, PMCID: PMC3490015, DOI: 10.1111/j.1460-9568.2012.08238.x.Peer-Reviewed Original ResearchConceptsNigral dopamine neuronsDA neuronsFiring patternsComplex firing patternsDopamine neuronsBursting activityChloral hydrate-anesthetized ratsHalothane-anesthetized ratsRat substantia nigraReward-related learningSubstantia nigraPhasic burstsFiring activityNeuronsBursting neuronsRatsStochastic firing patternsVivoNon-linear deterministic structureActivityNigra
2007
Oscillatory firing of dopamine neurons: Differences between cells in the substantia nigra and ventral tegmental area
Zhang D, Yang S, Jin G, Bunney B, Shi W. Oscillatory firing of dopamine neurons: Differences between cells in the substantia nigra and ventral tegmental area. Synapse 2007, 62: 169-175. PMID: 18081182, DOI: 10.1002/syn.20479.Peer-Reviewed Original ResearchConceptsVentral tegmental areaDA neuronsSubstantia nigraDopamine neuronsTegmental areaSlow oscillationsChloral hydrate-anesthetized ratsSN DA neuronsVTA DA neuronsDegree of burstingVariability of firingAfferent inputAdjacent substantia nigraOscillatory firingFiring rateNeuronsNeuronal oscillationsNigraCellsFiringRatsBrainImportant roleFunctional Coupling between the Prefrontal Cortex and Dopamine Neurons in the Ventral Tegmental Area
Gao M, Liu C, Yang S, Jin G, Bunney B, Shi W. Functional Coupling between the Prefrontal Cortex and Dopamine Neurons in the Ventral Tegmental Area. Journal Of Neuroscience 2007, 27: 5414-5421. PMID: 17507563, PMCID: PMC6672349, DOI: 10.1523/jneurosci.5347-06.2007.Peer-Reviewed Original ResearchConceptsVentral tegmental areaVTA DA neuronsDA neuronsPrefrontal cortexPFC neuronsDopamine neuronsTegmental areaAction potential-dependent DA releaseSlow oscillationsChloral hydrate-anesthetized ratsIntra-PFC infusionsFunctional couplingPFC terminalsVTA DAGlutamate releaseDA releaseExcitatory influenceRelay neuronsInhibitory influenceCell activityBrain functionNeuronsImportant new insightsCortexMultiple pathwaysClozapine Blocks D-Amphetamine-Induced Excitation of Dopamine Neurons in the Ventral Tegmental Area
Shi W, Zhang X, Pun C, Bunney B. Clozapine Blocks D-Amphetamine-Induced Excitation of Dopamine Neurons in the Ventral Tegmental Area. Neuropsychopharmacology 2007, 32: 1922-1928. PMID: 17299514, DOI: 10.1038/sj.npp.1301334.Peer-Reviewed Original ResearchConceptsD2-like receptorsDA neuronsVentral tegmental areaD-amphetamineDA receptorsExcitatory effectsTegmental areaΑ1 receptor antagonist prazosinAtypical antipsychotic drug clozapineChloral hydrate-anesthetized ratsTypical antipsychotic drug haloperidolCentral dopamine transmissionCurrent antipsychotic drugsReceptor antagonist prazosinAntipsychotic drug haloperidolAntipsychotic drug clozapineAntagonist prazosinExcitatory pathwaysDA transmissionDopamine neuronsΑ1 receptorsSystemic administrationAntipsychotic drugsExcitatory inputsIncomplete blockade
2000
Dual Effects of d-Amphetamine on Dopamine Neurons Mediated by Dopamine and Nondopamine Receptors
Shi W, Pun C, Zhang X, Jones M, Bunney B. Dual Effects of d-Amphetamine on Dopamine Neurons Mediated by Dopamine and Nondopamine Receptors. Journal Of Neuroscience 2000, 20: 3504-3511. PMID: 10777813, PMCID: PMC6773133, DOI: 10.1523/jneurosci.20-09-03504.2000.Peer-Reviewed Original ResearchConceptsD2-like receptorsD-amphetamineDA cellsSelective D2 antagonist racloprideVivo single-unit recordingsFiring rateAlpha1-antagonist prazosinAlpha2 antagonist idazoxanAlpha-antagonist phenoxybenzamineD2 antagonist racloprideDA cell firingSingle-unit recordingsRelated psychostimulantsAntagonist idazoxanAntagonist phenoxybenzamineDA receptorsAntagonist prazosinAntagonist racloprideExcitatory effectsAlpha1 receptorsDopamine neuronsDopamine releaseCell firingInhibitory effectReceptors
1997
D1–D2 Interaction in Feedback Control of Midbrain Dopamine Neurons
Shi W, Smith P, Pun C, Millet B, Bunney B. D1–D2 Interaction in Feedback Control of Midbrain Dopamine Neurons. Journal Of Neuroscience 1997, 17: 7988-7994. PMID: 9315916, PMCID: PMC6793911, DOI: 10.1523/jneurosci.17-20-07988.1997.Peer-Reviewed Original ResearchConceptsD2-like receptorsDA cellsDA autoreceptorsDA neuronsD1 agonistLow dosesDopamine D1-like receptorsD1 inhibitionD1 effectNigral DA cellsMidbrain DA neuronsD2 agonist quinpiroleD1-like receptorsDA receptor subtypesMidbrain dopamine neuronsOnly low dosesDA receptorsEndogenous DAAgonist quinpiroleD2 agonistIntranigral applicationDopamine neuronsReceptor subtypesRat preparationTarget neuronsDopamine-cell depolarization block as a model for the therapeutic actions of antipsychotic drugs
Grace A, Bunney B, Moore H, Todd C. Dopamine-cell depolarization block as a model for the therapeutic actions of antipsychotic drugs. Trends In Neurosciences 1997, 20: 31-37. PMID: 9004417, DOI: 10.1016/s0166-2236(96)10064-3.Peer-Reviewed Original ResearchConceptsDepolarization blockAntipsychotic drugsDopamine systemNigrostriatal dopamine systemWeeks of treatmentExtrapyramidal side effectsAntipsychotic drug efficacyDopamine receptor antagonistDrug treatment resultsMesolimbic dopamine neuronsTreatment of schizophreniaDopamine neuron firingReceptor blockadeDopamine neuronsTherapeutic impactSide effectsClinical actionsDrug AdministrationTherapeutic efficacyTreatment resultsDrug efficacyTherapeutic actionPotential mechanismsDrugsEfficacy
1996
Effects of Lesions in the Medial Prefrontal Cortex on the Activity of Midbrain Dopamine Neurons
Shim S, Bunney B, Shi W. Effects of Lesions in the Medial Prefrontal Cortex on the Activity of Midbrain Dopamine Neurons. Neuropsychopharmacology 1996, 15: 437-441. PMID: 8914116, DOI: 10.1016/s0893-133x(96)00052-8.Peer-Reviewed Original ResearchConceptsVentral tegmental areaDA neuronsPrefrontal cortexSubstantia nigraPFC lesionsBursting activityFiring rateActive DA cellsSN DA neuronsActive DA neuronsMidbrain dopamine neuronsSingle-unit recordingsMedial prefrontal cortexDA cellsDopamine neuronsTegmental areaLocal injectionIbotenic acidUnit recordingsLesionsSame lesionNeuronsRatsActivityCortexChronic morphine induces visible changes in the morphology of mesolimbic dopamine neurons.
Sklair-Tavron L, Shi W, Lane S, Harris H, Bunney B, Nestler E. Chronic morphine induces visible changes in the morphology of mesolimbic dopamine neurons. Proceedings Of The National Academy Of Sciences Of The United States Of America 1996, 93: 11202-11207. PMID: 8855333, PMCID: PMC38308, DOI: 10.1073/pnas.93.20.11202.Peer-Reviewed Original ResearchConceptsVTA dopamine neuronsVentral tegmental areaChronic morphine treatmentDopamine neuronsMorphine treatmentBrain regionsBrain-derived neurotrophic factorIntra-VTA infusionMorphine-treated ratsOpioid receptor antagonistChronic opiate exposureMesolimbic dopamine neuronsFluorescent dye Lucifer yellowMesolimbic dopamine functionMesolimbic dopamine systemImportant neural substrateDye Lucifer yellowNondopaminergic neuronsVTA neuronsChronic morphineOpiate exposureConcomitant treatmentDopaminergic neuronsNeurotrophic factorReceptor antagonist
1995
Ritanserin, a 5-HT2A/2C antagonist, reverses direct dopamine agonist-induced inhibition of midbrain dopamine neurons.
Shi W, Nathaniel P, Bunney B. Ritanserin, a 5-HT2A/2C antagonist, reverses direct dopamine agonist-induced inhibition of midbrain dopamine neurons. Journal Of Pharmacology And Experimental Therapeutics 1995, 274: 735-40. PMID: 7636736.Peer-Reviewed Original ResearchConceptsEffects of ritanserinBasal firing rateDA autoreceptorsDA neuronsDA agonistsP-chlorophenylalanineSubstantia nigra DA neuronsSingle-unit recording techniquesChloral hydrate-anesthetized ratsFiring rateDA agonist quinpiroleDirect DA agonistsIndirect DA agonistPostsynaptic D2 receptorsExtrapyramidal side effectsD2-like receptorsSignificant therapeutic effectAgonist-induced inhibitionMidbrain dopamine neuronsMidbrain dopamine systemAgonist quinpiroleDA antagonistsMDL 100907Receptor antagonistDopamine neuronsNonlinear sequence-dependent structure of nigral dopamine neuron interspike interval firing patterns
Hoffman R, Shi W, Bunney B. Nonlinear sequence-dependent structure of nigral dopamine neuron interspike interval firing patterns. Biophysical Journal 1995, 69: 128-137. PMID: 7669889, PMCID: PMC1236231, DOI: 10.1016/s0006-3495(95)79882-4.Peer-Reviewed Original ResearchConceptsNonlinear deterministic structureDeterministic structureNumber of degreesDopamine neuronsDynamical analysisEffect of nonstationarityRandom processFiring patternsNigral dopamine neuronsRat substantia nigraSubstantia nigraSynaptic inputsISI sequencesNeuron responsesTime seriesNeural circuit interactionsSequence-dependent structureNeuronsFiring modesCircuit interactionsOverall predictabilityNonstationarity
1993
Depolarization inactivation of dopamine neurons: Terminal release characteristics
Moghaddam B, Bunney B. Depolarization inactivation of dopamine neurons: Terminal release characteristics. Synapse 1993, 14: 195-200. PMID: 8105547, DOI: 10.1002/syn.890140302.Peer-Reviewed Original ResearchConceptsExtracellular dopamine levelsChronic haloperidol treatmentDopamine levelsHaloperidol treatmentExtracellular levelsPerfusion of tetrodotoxinExcitatory amino acidsStriatal extracellular levelsVehicle-treated animalsExtracellular glutamate levelsHaloperidol-treated animalsMedial forebrain bundleStriatal dopamine systemGroups of animalsExogenous antagonistsChronic haloperidolChronic treatmentDepolarization inactivationExcitatory actionBasal outflowDopamine neuronsGlutamate levelsImpulse flowForebrain bundleMicrodialysis technique
1992
Roles of intracellular cAMP and protein kinase A in the actions of dopamine and neurotensin on midbrain dopamine neurons
Shi W, Bunney B. Roles of intracellular cAMP and protein kinase A in the actions of dopamine and neurotensin on midbrain dopamine neurons. Journal Of Neuroscience 1992, 12: 2433-2438. PMID: 1318960, PMCID: PMC6575923, DOI: 10.1523/jneurosci.12-06-02433.1992.Peer-Reviewed Original ResearchConceptsDopamine-induced inhibitionEffects of neurotensinDopamine neuronsIntracellular cAMPAdenylate cyclaseAction of neurotensinRat midbrain slicesAction of dopamineVentral tegmental areaMidbrain dopamine neuronsIntracellular cAMP levelsMidbrain slicesSubstantia nigraTegmental areaDopamine cellsDopamine effectsSpontaneous activityModulatory effectsNeurotensinIsobutyl methylxanthineInhibitory effectNeuronsCAMP levelsProtein kinase CInhibition
1991
Effects of neurotensin on midbrain dopamine neurons: Are they mediated by formation of a neurotensin—dopamine complex?
Shi W, Bunney B. Effects of neurotensin on midbrain dopamine neurons: Are they mediated by formation of a neurotensin—dopamine complex? Synapse 1991, 9: 157-164. PMID: 1776128, DOI: 10.1002/syn.890090302.Peer-Reviewed Original ResearchConceptsEffects of neurotensinNeurotensin receptorsDopamine neuronsDopamine cellsCell activitySingle-unit recording techniquesFiring rateMidbrain dopamine neuron activityAction of neurotensinBasal firing rateDopamine receptor blockadeDopamine-induced inhibitionDopamine neuron activityMidbrain dopamine neuronsReceptor blockadeDepolarization inactivationExcitatory effectsNative neurotensinBrain slicesNeuron activityNeurotensinNeurotensin analoguesSame receptorRecording techniquesReceptorsNeurotensin modulates autoreceptor mediated dopamine effects on midbrain dopamine cell activity
Shi W, Bunney B. Neurotensin modulates autoreceptor mediated dopamine effects on midbrain dopamine cell activity. Brain Research 1991, 543: 315-321. PMID: 1676331, DOI: 10.1016/0006-8993(91)90043-u.Peer-Reviewed Original ResearchConceptsDA cellsCell activityFiring rateDA cell activityInteraction of neurotensinGlutamate-induced excitationEffects of neurotensinMidbrain dopamine cell activityDopamine cell activityMidbrain dopamine neuronsSpecific D2 agonistMicroiontophoretic techniquesD2 agonistDopamine neuronsD2 receptorsDopamine effectsSpontaneous activityNeurotensinNT effectsLocal ejectionInhibitionSignificant changesCellsCell levelSame cells
1990
Neurotensin attenuates dopamine D2 agonist quinpirole-induced inhibition of midbrain dopamine neurons
Shi W, Bunney B. Neurotensin attenuates dopamine D2 agonist quinpirole-induced inhibition of midbrain dopamine neurons. Neuropharmacology 1990, 29: 1095-1097. PMID: 1982340, DOI: 10.1016/0028-3908(90)90119-c.Peer-Reviewed Original ResearchConceptsD2 agonistDA cellsSingle-unit recording techniquesMidbrain DA neuronsCentral DA systemsDopamine D2 agonistMidbrain dopamine neuronsSpecific D2 agonistDA neuronsIntracerebroventricular administrationDopamine neuronsSpontaneous activityDA systemInhibitory effectRecording techniquesAgonistsNeuronsBiochemical studiesCellsQuinpiroleNeurotensinRatsAdministration
1989
The effect of acute and chronic treatment with SCH 23390 on the spontaneous activity of midbrain dopamine neurons
Esposito E, Bunney B. The effect of acute and chronic treatment with SCH 23390 on the spontaneous activity of midbrain dopamine neurons. European Journal Of Pharmacology 1989, 162: 109-113. PMID: 2656273, DOI: 10.1016/0014-2999(89)90609-2.Peer-Reviewed Original ResearchConceptsSubstantia nigra pars compactaVentral tegmental areaActive DA neuronsSCH 23390Chronic treatmentDA neuronsDopamine neuronsDepolarization blockSpontaneous activityDA receptor blockadeAcute subcutaneous injectionGroups of ratsMidbrain dopamine neuronsChronic haloperidolReceptor blockadeChronic administrationPars compactaTegmental areaAntipsychotic drugsSubcutaneous injectionChronic experimentsMarked reductionNeuronsTreatmentHaloperidol
1988
Intracellular studies of dopamine neurons in vitro: pacemakers modulated by dopamine
Silva N, Bunney B. Intracellular studies of dopamine neurons in vitro: pacemakers modulated by dopamine. European Journal Of Pharmacology 1988, 149: 307-315. PMID: 3409955, DOI: 10.1016/0014-2999(88)90661-9.Peer-Reviewed Original ResearchConceptsSensitive neuronsInput resistanceAdministration of DADA-sensitive neuronsSelective D2 antagonistPacemaker-like activityHigh input resistanceZona compactaDA actionD2 antagonistDopamine neuronsIntracellular recordingsFiring rateIntracellular studyNeuronsReversal potentialTissue slicesDopamineHyperpolarizationSulpirideAntagonistCompactaAdministration
1987
The Electrophysiological and Biochemical Pharmacology of the Mesolimbic and Mesocortical Dopamine Neurons
Bannon M, Freeman A, Chiodo L, Bunney B, Roth R. The Electrophysiological and Biochemical Pharmacology of the Mesolimbic and Mesocortical Dopamine Neurons. 1987, 329-374. DOI: 10.1007/978-1-4613-1819-4_5.Peer-Reviewed Original ResearchMidbrain DA systemsDA systemDA-sensitive adenylate cyclaseMesocortical DA systemMesocortical dopamine neuronsNorepinephrine-containing neuronsMidbrain DA neuronsNigrostriatal DA systemMesolimbic DA systemAnatomical studyFluorescence histochemical techniqueSubsequent anatomical studiesDA neuronsNeurons projectCerebral cortexDA pathwayDopamine neuronsLimbic regionsMidbrain dopamineUnconditioned behaviorTopic of reviewNeuronsAdenylate cyclaseBiochemical pharmacologyAnatomical aspects
1986
Induction of depolarization block in midbrain dopamine neurons by repeated administration of haloperidol: analysis using in vivo intracellular recording.
Grace A, Bunney B. Induction of depolarization block in midbrain dopamine neurons by repeated administration of haloperidol: analysis using in vivo intracellular recording. Journal Of Pharmacology And Experimental Therapeutics 1986, 238: 1092-100. PMID: 3746660.Peer-Reviewed Original ResearchConceptsAdministration of haloperidolDopamine neuronsVivo intracellular recordingsDepolarization blockIntracellular recordingsNigral dopamine neuronsAdministration of neurolepticsActive dopamine neuronsSpontaneous spike activityDopamine agonist apomorphineAntipsychotic drug haloperidolSpontaneous electrophysiological activityMidbrain dopamine neuronsAcute administrationAgonist apomorphineSubstantia nigraControl ratsExcitatory driveDepolarization blockadeDrug haloperidolSpontaneous activitySpike activityFiring rateHaloperidolNeurons