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 ResearchMeSH KeywordsAction PotentialsAnimalsDopaminergic NeuronsMaleRatsRats, Sprague-DawleySubstantia NigraConceptsNigral 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 ResearchMeSH KeywordsAction PotentialsAnimalsDopamineMaleNeuronsProbabilityRatsRats, Sprague-DawleySubstantia NigraVentral Tegmental AreaConceptsVentral 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 ResearchMeSH KeywordsAction PotentialsAnimalsDopamineMaleNeuronsPrefrontal CortexRatsRats, Sprague-DawleyVentral Tegmental AreaConceptsVentral 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 rateAlpha-antagonist phenoxybenzamineAlpha1-antagonist prazosinAlpha2 antagonist idazoxanD2 antagonist racloprideDA cell firingSingle-unit recordingsRelated psychostimulantsAntagonist idazoxanAntagonist phenoxybenzamineDA receptorsAntagonist prazosinAntagonist racloprideExcitatory effectsAlpha1 receptorsDopamine neuronsDopamine releaseCell firingInhibitory effectReceptorsAnatomic basis of sequence‐dependent predictability exhibited by nigral dopamine neuron firing patterns
Hoffman R, Shi W, Bunney B. Anatomic basis of sequence‐dependent predictability exhibited by nigral dopamine neuron firing patterns. Synapse 2000, 39: 133-138. PMID: 11180500, DOI: 10.1002/1098-2396(200102)39:2<133::aid-syn4>3.0.co;2-k.Peer-Reviewed Original Research
1995
Nonlinear 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
1991
Repetitive firing properties of putative dopamine-containing neurons in vitro: regulation by an apamin-sensitive Ca2+-activated K+ conductance
Shepard P, Bunney B. Repetitive firing properties of putative dopamine-containing neurons in vitro: regulation by an apamin-sensitive Ca2+-activated K+ conductance. Experimental Brain Research 1991, 86: 141-150. PMID: 1756785, DOI: 10.1007/bf00231048.Peer-Reviewed Original ResearchConceptsAction potentialsPutative dopamine-containing neuronsEffects of apaminDopamine-containing neuronsIntracellular recording techniquesPost-spike afterhyperpolarizationRepetitive firing propertiesTypes of Ca2Apamin-sensitive Ca2Adaptive neuronal responsesZona compactaSubstantia nigraBath applicationInhibitory periodNeuronal responsesAfterhyperpolarizationApaminFiring propertiesRecording techniquesCellular mechanismsElectroresponsive propertiesFrequency adaptationSelective inhibitorInterspike intervalsNeurons
1988
Effects of apamin on the discharge properties of putative dopamine-containing neurons in vitro
Shepard P, Bunney B. Effects of apamin on the discharge properties of putative dopamine-containing neurons in vitro. Brain Research 1988, 463: 380-384. PMID: 3196925, DOI: 10.1016/0006-8993(88)90414-3.Peer-Reviewed Original ResearchConceptsDopamine-containing neuronsPutative dopamine-containing neuronsEffects of apaminCalcium-activated potassium conductanceCalcium-activated potassium channelsBrain slice preparationApamin administrationSubstantia nigraSlice preparationNeuronal excitabilityBursting activityPotassium conductancePotassium channelsNeuronsSelective inhibitorApaminRegular activitiesExcitabilityAdministrationNigraExcitability properties of medial forebrain bundle axons of A9 and A10 dopamine cells
Yeomans J, Maidment N, Bunney B. Excitability properties of medial forebrain bundle axons of A9 and A10 dopamine cells. Brain Research 1988, 450: 86-93. PMID: 3261193, DOI: 10.1016/0006-8993(88)91547-8.Peer-Reviewed Original Research
1987
Electrophysiological studies on the specificity of the cholecystokinin antagonist proglumide
Chiodo L, Freeman A, Bunney B. Electrophysiological studies on the specificity of the cholecystokinin antagonist proglumide. Brain Research 1987, 410: 205-211. PMID: 3036308, DOI: 10.1016/0006-8993(87)90317-9.Peer-Reviewed Original ResearchConceptsExcitatory effectsInhibitory effectA9 DA neuronsCCK receptor blockadeSelective CCK antagonistsMidbrain dopamine cellsPrefrontal cortical neuronsInhibitory potencyDA neuronsReceptor blockadeChronic treatmentSensorimotor cortexC-terminal octapeptideCCK antagonistsDA cellsSubstance PAPO effectsCortical neuronsDopamine cellsIntravenous administrationSelective antagonistRat CNSProglumideElectrophysiological studiesCholecystokinin
1985
Firing properties of substantia nigra dopaminergic neurons in freely moving rats
Freeman A, Meltzer L, Bunney B. Firing properties of substantia nigra dopaminergic neurons in freely moving rats. Life Sciences 1985, 36: 1983-1994. PMID: 3990520, DOI: 10.1016/0024-3205(85)90448-5.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsApomorphineDopamineHaloperidolMaleNeuronsRatsRats, Inbred StrainsSubstantia NigraConceptsPutative DA neuronsDA neuronsDopaminergic neuronsParalyzed ratsSubstantia nigra dopaminergic neuronsFiring patternsPutative dopaminergic neuronsNigrostriatal DA systemNigra dopaminergic neuronsApomorphine-induced inhibitionSingle spike activityPattern of firingSingle-unit recordingsDegree of burstSubstantia nigraDA cellsElectrophysiological characteristicsUnit recordingsSpike activityFiring propertiesRatsFiring rateNeuronsDA systemCells
1984
The control of firing pattern in nigral dopamine neurons: single spike firing
Grace A, Bunney B. The control of firing pattern in nigral dopamine neurons: single spike firing. Journal Of Neuroscience 1984, 4: 2866-2876. PMID: 6150070, PMCID: PMC6564731, DOI: 10.1523/jneurosci.04-11-02866.1984.Peer-Reviewed Original ResearchConceptsSingle-spike firingDA cellsSlow depolarizationCalcium chelator EGTADopamine neuronsSpike firingCalcium-activated potassium conductanceActive DA cellsNigral dopamine neuronsChelator EGTAVivo intracellular recordingsDA neuronsDepolarization inactivationMembrane potentialIontophoretic applicationTrain of spikesIntracellular recordingsExcitatory substancesIntracellular injectionCalcium entryAction potentialsAfterhyperpolarizationPotassium conductanceRate of riseNeuronsThe control of firing pattern in nigral dopamine neurons: burst firing
Grace A, Bunney B. The control of firing pattern in nigral dopamine neurons: burst firing. Journal Of Neuroscience 1984, 4: 2877-2890. PMID: 6150071, PMCID: PMC6564720, DOI: 10.1523/jneurosci.04-11-02877.1984.Peer-Reviewed Original ResearchConceptsDA cellsIntracellular injectionBase-line firing rateFiring ratePotassium conductanceIntracellular calcium injectionNigral dopamine neuronsStriatal DA releaseVivo intracellular recordingsBurst-firing modeDegree of burstDA releaseDopamine neuronsExtracellular iontophoresisBurst firingIntracellular recordingsCalcium injectionDopamine cellsCalcium influxCalcium involvementBursting patternInjectionCellsConsecutive spikesBlockade
1983
Intracellular and extracellular electrophysiology of nigral dopaminergic neurons—1. Identification and characterization
Grace A, Bunney B. Intracellular and extracellular electrophysiology of nigral dopaminergic neurons—1. Identification and characterization. Neuroscience 1983, 10: 301-315. PMID: 6633863, DOI: 10.1016/0306-4522(83)90135-5.Peer-Reviewed Original ResearchConceptsAction potentialsDopamine neuronsDopamine cellsGlyoxylic acid-induced catecholamine fluorescenceInput resistanceDopamine synthesizing enzymePostsynaptic target areasIntracellular dopamine contentNigral dopamine cellsPossible modulatory effectDopamine-containing cellsIntracellular dopamine concentrationSame inhibitory effectHigh input resistanceInitial segmentAntidromic activationDopaminergic neuronsDopamine contentIntracellular recordingsDopamine synthesisCaudate nucleusElectrophysiological characteristicsTyrosine hydroxylaseCatecholamine fluorescenceModulatory effectsIntracellular and extracellular electrophysiology of nigral dopaminergic neurons—2. Action potential generating mechanisms and morphological correlates
Grace A, Bunney B. Intracellular and extracellular electrophysiology of nigral dopaminergic neurons—2. Action potential generating mechanisms and morphological correlates. Neuroscience 1983, 10: 317-331. PMID: 6633864, DOI: 10.1016/0306-4522(83)90136-7.Peer-Reviewed Original ResearchConceptsInitial segment spikesDopamine neuronsSlow depolarizationAction potentialsAxon hillockDendritic dopamine releaseLong-duration afterhyperpolarizationNigral dopamine neuronsLow-threshold spikesLucifer yellow injectionExtracellular recording techniquesLong-duration spikesAction potential generationDopaminergic neuronsSpecific ionic currentsIntracellular recordingsDopamine releaseIntracellular injectionElectrophysiological studiesDendritic spikesMajor dendritesNeuron 2Action potential generating mechanismSomatic regionNeuronal compartments
1980
Nigral Dopamine Neurons: Intracellular Recording and Identification with L-Dopa Injection and Histofluorescence
Grace A, Bunney B. Nigral Dopamine Neurons: Intracellular Recording and Identification with L-Dopa Injection and Histofluorescence. Science 1980, 210: 654-656. PMID: 7433992, DOI: 10.1126/science.7433992.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsDopamineHippocampusLevodopaMembrane PotentialsMicroscopy, FluorescenceNeuronsRatsSubstantia NigraConceptsL-DOPA injectionIntracellular recordingsAntidromic conduction velocitiesPutative dopaminergic neuronsDopamine-containing neuronsRat substantia nigraAntidromic activationDopaminergic neuronsSubstantia nigraSlow depolarizationBurst firingFluorescence histochemistryConduction velocityFast potentialsNeuronsExtracellular spikesInjectionHistofluorescenceRecordingsNigra
1979
Dopamine Auto- and Postsynaptic Receptors: Electrophysiological Evidence for Differential Sensitivity to Dopamine Agonists
Skirboll L, Grace A, Bunney B. Dopamine Auto- and Postsynaptic Receptors: Electrophysiological Evidence for Differential Sensitivity to Dopamine Agonists. Science 1979, 206: 80-82. PMID: 482929, DOI: 10.1126/science.482929.Peer-Reviewed Original ResearchMeSH KeywordsAction PotentialsAnimalsApomorphineCaudate NucleusDendritesDopamineRatsReceptors, DopamineSubstantia NigraSynaptic MembranesConceptsDopamine autoIntravenous apomorphineDopamine agonistsPostsynaptic receptorsCentral nervous systemSubstantia nigraDopaminergic cellsDifferential sensitivityDopamine cellsDopaminergic influenceCaudate nucleusLarge dosesCaudate cellsNervous systemActive neuronsBehavioral effectsElectrophysiological evidenceApomorphineAgonistsParadoxical behavioural effectsReceptorsDopamineCellsNeuronsDoses
1978
d-Amphetamine-induced depression of central dopamine neurons: Evidence for mediation by both autoreceptors and a striato-nigral feedback pathway
Bunney B, Aghajanian G. d-Amphetamine-induced depression of central dopamine neurons: Evidence for mediation by both autoreceptors and a striato-nigral feedback pathway. Naunyn-Schmiedeberg's Archives Of Pharmacology 1978, 304: 255-261. PMID: 714182, DOI: 10.1007/bf00507966.Peer-Reviewed Original ResearchConceptsDA cellsSubstantia nigraFeedback pathwaysCentral dopamine neuronsIntravenous d-amphetamineNon-convulsant dosesPicrotoxin-treated animalsKainic acid injectionRelease of GABAActivity of dopamineNon-lesioned animalsSingle-cell recordingsDA autoreceptorsDendrodendritic synapsesMicroiontophoretic techniquesAfferent terminalsDepressant effectUnlesioned animalsDopamine neuronsGABA antagonistsAnesthetized ratsD-amphetamineCaudate nucleusAcid injectionHigh doses
1977
Dopamine “Autoreceptors”: Pharmacological characterization by microiontophoretic single cell recording studies
Aghajanian G, Bunney B. Dopamine “Autoreceptors”: Pharmacological characterization by microiontophoretic single cell recording studies. Naunyn-Schmiedeberg's Archives Of Pharmacology 1977, 297: 1-7. PMID: 193046, DOI: 10.1007/bf00508803.Peer-Reviewed Original ResearchConceptsDA neuronsDepressant effectDA agonist apomorphineWeak depressant actionSingle-cell recording studiesSingle-cell recordingsAgonist apomorphineDA agonistsMicroiontophoretic applicationMicroiontophoretic techniquesSubstantia nigraDepressant actionDopamine neuronsSingle dopamine neuronsPharmacological characterizationCatecholamine receptorsΒ-adrenoreceptorsCell recordingsCatecholamine agonistsRecording studiesNeuronsAutoreceptorsAntagonist trifluoperazineAgonistsSelective responsiveness