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 effectReceptors
1999
Endogenous DA‐mediated feedback inhibition of DA neurons: Involvement of both D1‐ and D2‐like receptors
Shi W, Pun C, Smith P, Bunney B. Endogenous DA‐mediated feedback inhibition of DA neurons: Involvement of both D1‐ and D2‐like receptors. Synapse 1999, 35: 111-119. PMID: 10611636, DOI: 10.1002/(sici)1098-2396(200002)35:2<111::aid-syn3>3.0.co;2-7.Peer-Reviewed Original ResearchConceptsDA neuronsLike receptorsDA cellsEndogenous DAChloral hydrate-anesthetized ratsNigral DA cellsD2-like receptorsSingle-unit recordingsCerveau isolé preparationFeedback inhibitionParkinsonian animalsAntagonist racloprideAntagonist SCH23390DA releaseEndogenous dopamineD-amphetamineParkinson's diseaseUnit recordingsSCH23390Receptor activationBaseline activityReceptorsChloral hydrateNeuronsConcurrent activation
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 neurons
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 lesionNeuronsRatsActivityCortex
1992
Actions of Neurotensin: A Review of the Electrophysiological Studiesa
SHI W, BUNNEY B. Actions of Neurotensin: A Review of the Electrophysiological Studiesa. Annals Of The New York Academy Of Sciences 1992, 668: 129-145. PMID: 1463269, DOI: 10.1111/j.1749-6632.1992.tb27345.x.Peer-Reviewed Original ResearchMeSH KeywordsNeurotensinConceptsExcitatory effectsDA cellsModulatory effectsDA receptor blockadeDirect postsynaptic effectAction of neurotensinGlutamate-induced excitationMidbrain DA cellsMembrane conductancePostsynaptic effectsReceptor blockadeDepolarization inactivationNT receptorsCell activityFiring rateSame receptorNeuromedin NSudden cessationHigh concentrationsProtein kinase CBasal activityToxic effectsInhibitionNeurotensinReceptors
1991
Neurotensin 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
1987
Central dopamine-peptide interactions: Electrophysiological studies
Bunney B. Central dopamine-peptide interactions: Electrophysiological studies. Neuropharmacology 1987, 26: 1003-1009. PMID: 3309707, DOI: 10.1016/0028-3908(87)90079-7.Peer-Reviewed Original ResearchConceptsDA systemSelective non-peptide antagonistMidbrain DA systemsCentral DA systemsNon-peptide antagonistsPotential therapeutic valuePotential clinical interestDA neuronsDA cellsElectrophysiological studiesMental disordersTherapeutic valueEffects of peptidesSpecific receptorsAnatomical evidenceClinical interestEndogenous substancesPeptide systemBrainPhysiological activityVariety of peptidesBehavioral studiesPhysiological relevancePeptidesActive peptidesElectrophysiological 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
Possible mechanisms by which repeated clozapine administration differentially affects the activity of two subpopulations of midbrain dopamine neurons
Chiodo L, Bunney B. Possible mechanisms by which repeated clozapine administration differentially affects the activity of two subpopulations of midbrain dopamine neurons. Journal Of Neuroscience 1985, 5: 2539-2544. PMID: 2863337, PMCID: PMC6565310, DOI: 10.1523/jneurosci.05-09-02539.1985.Peer-Reviewed Original ResearchConceptsDA neuronsClozapine administrationChronic treatmentDepolarization inactivationExtracellular single cell recording techniquesInhibitory neurotransmitter gamma-aminobutyric acidNeurotransmitter gamma-aminobutyric acidVentral tegmental area (VTA) dopamineSingle cell recording techniquesA10 DA neuronsVivo spontaneous activityMidbrain DA neuronsChloral hydrate anesthesiaCombination of drugsMidbrain dopamine neuronsGamma-aminobutyric acidDifferential effectsMechanism of actionAcute treatmentMicroiontophoretic applicationSubstantia nigraReceptor antagonistDA cellsDopamine neuronsSpontaneous activityAn electrophysiological analysis of the actions of the 3-PPP enantiomers on the nigrostriatal dopamine system
Clark D, Engberg G, Pileblad E, Svensson T, Carlsson A, Freeman A, Bunney B. An electrophysiological analysis of the actions of the 3-PPP enantiomers on the nigrostriatal dopamine system. Naunyn-Schmiedeberg's Archives Of Pharmacology 1985, 329: 344-354. PMID: 4033804, DOI: 10.1007/bf00496366.Peer-Reviewed Original ResearchConceptsPostsynaptic DA receptorsInhibitory actionDA autoreceptorsDA receptorsNeuronal activityDA cell firing rateExtracellular single-unit recordingsCaudate neuronal activityDA neuronal activityGallamine-paralyzed ratsNigrostriatal DA systemNigrostriatal dopamine systemSingle-unit recordingsCell firing rateReticulata neuronsDA agonistsDA cellsIntravenous administrationMajority of cellsDopamine systemN-propylpiperidineUnit recordingsPartial agonistCell activityFiring rateLow doses of apomorphine elicit two opposing influences on dopamine cell electrophysiology
Grace A, Bunney B. Low doses of apomorphine elicit two opposing influences on dopamine cell electrophysiology. Brain Research 1985, 333: 285-298. PMID: 3995296, DOI: 10.1016/0006-8993(85)91582-3.Peer-Reviewed Original ResearchConceptsDA cell firingDA cellsLow dosesInput resistanceDA agonistsReversal potentialStriatonigral pathwayCell firingCell firing rateElectrophysiological actionsApomorphine effectApomorphine administrationSlow depolarizationIntracellular recordingsIntravenous administrationDopamine cellsInhibitory inputsApomorphineStriatal cellsAction potentialsFiring rateAgonistsDosesCell dischargeCell electrophysiologyOpposing effects of striatonigral feedback pathways on midbrain dopamine cell activity
Grace A, Bunney B. Opposing effects of striatonigral feedback pathways on midbrain dopamine cell activity. Brain Research 1985, 333: 271-284. PMID: 2986775, DOI: 10.1016/0006-8993(85)91581-1.Peer-Reviewed Original ResearchConceptsInhibitory postsynaptic potentialsDA cellsStriatal stimulationReticulata neuronsDA neuronsRebound depolarizationReversal potentialSubstantia nigra zona reticulata neuronsStriatonigral GABAergic pathwayMidbrain dopamine cell activityDopamine cell activitySame stimulation parametersChloride injectionChloride channel blockerChloride reversal potentialSimilar reversal potentialsSimilar time courseGABAergic pathwayGABAergic projectionsZona reticulataPostsynaptic potentialsSystemic injectionChannel blockersIntracellular recordingsStriatal cellsFiring 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 ResearchConceptsPutative 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
Typical and atypical neuroleptics: differential effects of chronic administration on the activity of A9 and A10 midbrain dopaminergic neurons
Chiodo L, Bunney B. Typical and atypical neuroleptics: differential effects of chronic administration on the activity of A9 and A10 midbrain dopaminergic neurons. Journal Of Neuroscience 1983, 3: 1607-1619. PMID: 6135762, PMCID: PMC6564520, DOI: 10.1523/jneurosci.03-08-01607.1983.Peer-Reviewed Original ResearchConceptsExtrapyramidal side effectsDepolarization inactivationA10 neuronsAntipsychotic drugsDA neuronsDopaminergic neuronsSide effectsExtracellular single-unit recording techniquesExcitatory amino acid glutamateInhibitory neurotransmitter gamma-aminobutyric acidSingle-unit recording techniquesNeurotransmitter gamma-aminobutyric acidActive DA cellsA10 dopaminergic neuronsMidbrain dopaminergic neuronsGamma-aminobutyric acidActivity of A9Amino acid glutamateChronic administrationMicroiontophoretic applicationNeuroleptic treatmentNeuroleptic administrationAtypical neurolepticsTricyclic antidepressantsDA cells
1980
Effects of baclofen on nigral dopaminergic cell activity following acute and chronic haloperidol treatment
Grace A, Bunney B. Effects of baclofen on nigral dopaminergic cell activity following acute and chronic haloperidol treatment. Brain Research Bulletin 1980, 5: 537-543. DOI: 10.1016/0361-9230(80)90087-8.Peer-Reviewed Original ResearchChronic haloperidol treatmentDopaminergic cell activityEffects of baclofenHaloperidol treatmentLow dosesExtracellular single-unit recording techniquesNeuroleptic-induced side effectsRat nigral dopaminergic neuronsCell activitySingle-unit recording techniquesInhibitory effectNigral DA cellsSingle low dosesNigral dopaminergic neuronsTreatment of spasticityAction of baclofenDose-response curveMechanism of actionDepolarization inactivationDopaminergic neuronsHaloperidol pretreatmentDA cellsPossible efficacyNigral inputsBaclofenPeripheral and striatal influences on nigral dopamine cells: Mediation by reticulata neurons
Grace A, Hommer D, Bunney B. Peripheral and striatal influences on nigral dopamine cells: Mediation by reticulata neurons. Brain Research Bulletin 1980, 5: 105-109. DOI: 10.1016/0361-9230(80)90017-9.Peer-Reviewed Original ResearchDA cellsZona reticulataGABA agonistsInhibitory influenceDA cell firing rateDopamine receptor blocker haloperidolStriato-nigral pathwayNigral dopamine cellsCell firing rateReticulata neuronsStriatal influencesSubstantia nigraDopaminergic cellsDopamine cellsNoxious stimuliLow dosesFiring rateNeuronsInhibitory effectAgonistsCell rateCellsHaloperidolMuscimolDoses
1979
EFFECTS OF CHRONIC HALOPERIDOL TREATMENT ON NIGRAL DOPAMINERGIC CELL ACTIVITY
Bunney B, Grace A. EFFECTS OF CHRONIC HALOPERIDOL TREATMENT ON NIGRAL DOPAMINERGIC CELL ACTIVITY. 1979, 666-668. DOI: 10.1016/b978-1-4832-8363-0.50202-0.Peer-Reviewed Original ResearchActive DA cellsChronic haloperidol treatmentDA cellsExtracellular single-unit recording techniquesRat nigral dopaminergic neuronsSingle-unit recording techniquesNigral dopaminergic neuronsNeurological side effectsEffects of chronicDepolarization inactivationHaloperidol treatmentDopaminergic neuronsExcitatory inputsSide effectsCell activityRecording techniquesPossible new mechanismSubsequent studiesTreatmentCellsAnimalsNigralChronicNeurons