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 role
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
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
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 neurons
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
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
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
Activity of A9 and A10 dopaminergic neurons in unrestrained rats: further characterization and effects of apomorphine and cholecystokinin
Freeman A, Bunney B. Activity of A9 and A10 dopaminergic neurons in unrestrained rats: further characterization and effects of apomorphine and cholecystokinin. Brain Research 1987, 405: 46-55. PMID: 3032350, DOI: 10.1016/0006-8993(87)90988-7.Peer-Reviewed Original ResearchConceptsCCK-8A9 neuronsDA neuronsDopaminergic neuronsUnrestrained ratsVentral tegmental area cellsFiring rateCCK-8 pretreatmentDA cell activitySingle dopaminergic neuronsEffects of apomorphineA10 dopaminergic neuronsActivity of A9Sulfated CCK-8A10 neuronsDA agonistsAnesthetized ratsParalyzed ratsSequential dosesA10 cellsCell activityCell firingUnit firingUnit activityApomorphinePopulation response of midbrain dopaminergic neurons to neuroleptics: further studies on time course and nondopaminergic neuronal influences
Chiodo L, Bunney B. Population response of midbrain dopaminergic neurons to neuroleptics: further studies on time course and nondopaminergic neuronal influences. Journal Of Neuroscience 1987, 7: 629-633. PMID: 2881987, PMCID: PMC6569064, DOI: 10.1523/jneurosci.07-03-00629.1987.Peer-Reviewed Original ResearchConceptsDepolarization-induced inactivationFiring rateDopaminergic neuronsDopamine receptor agonist apomorphineMonths' continuous treatmentAcute oral administrationBasal firing rateActive DA neuronsReceptor agonist apomorphineA10 dopaminergic neuronsActive dopamine neuronsClassical antipsychotic drugsDopamine-containing neuronsPresence of haloperidolHr of administrationLong-term treatmentMidbrain dopaminergic neuronsCholecystokinin receptor antagonistAge-matched controlsHaloperidol resultsA10 regionDA neuronsAcute administrationAgonist apomorphineNeuroleptic haloperidol
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
1985
An 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 electrophysiologyFiring 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: 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 spikesBlockadeThe effects of phencyclidine and N-allylnormetazocine on midbrain dopamine neuronal activity
Freeman A, Bunney B. The effects of phencyclidine and N-allylnormetazocine on midbrain dopamine neuronal activity. European Journal Of Pharmacology 1984, 104: 287-293. PMID: 6094217, DOI: 10.1016/0014-2999(84)90404-7.Peer-Reviewed Original ResearchConceptsDA neuronsNeuronal activityN-allylnormetazocineMidbrain dopamine neuronal activitySingle-unit recording techniquesSubstantia nigra zona compactaFiring rateA10 DA neuronsDopamine neuronal activitySigma receptor agonistsMidbrain dopamine neuronsBaseline firing rateEffects of phencyclidineWeak inhibitory actionExcitatory effectsZona compactaHaloperidol pretreatmentDopamine neuronsReceptor agonistBiphasic effectInhibitory actionNeuronsRecording techniquesPhencyclidineDrugsAntipsychotic drug effects on the electrical activity of dopaminergic neurons
Bunney B. Antipsychotic drug effects on the electrical activity of dopaminergic neurons. Trends In Neurosciences 1984, 7: 212-215. DOI: 10.1016/s0166-2236(84)80013-2.Peer-Reviewed Original ResearchClinical effectsAntipsychotic drugsChronic studiesAntipsychotic drug effectsDopamine cell activityCell firing rateMechanism of actionDopaminergic neuronsDrug effectsCell activityElectrophysiological techniquesFiring rateBehavioral effectsDrugsElectrical activityTime-dependent changesNeuronsCellular sitesChemical messengersSpecific actionsActivityEvidence for the absence of impulse-regulating somatodendritic and synthesis-modulating nerve terminal autoreceptors on subpopulations of mesocortical dopamine neurons
Chiodo L, Bannon M, Grace A, Roth R, Bunney B. Evidence for the absence of impulse-regulating somatodendritic and synthesis-modulating nerve terminal autoreceptors on subpopulations of mesocortical dopamine neurons. Neuroscience 1984, 12: 1-16. PMID: 6462443, DOI: 10.1016/0306-4522(84)90133-7.Peer-Reviewed Original ResearchConceptsSpikes/sDopamine neuronsPiriform cortexDopamine levelsCaudate nucleusCingulate cortexIntravenous administrationDopamine cellsFiring rateGlyoxylic acid-induced histofluorescenceCatecholamine histofluorescence techniquesMesocortical dopamine neuronsNerve terminal autoreceptorsNigrostriatal dopamine cellsDose-dependent inhibitory responseDopamine agonist apomorphineBasal discharge rateMidbrain dopaminergic neuronsMidbrain dopaminergic systemMean firing rateMidbrain dopamine systemMesocortical neuronsAgonist apomorphineMicroiontophoretic applicationAntidromic activation
1981
Peptide-monoamine coexistence: Studies of the actions of cholecystokinin-like peptide on the electrical activity of midbrain dopamine neurons
Skirboll L, Grace A, Hommer D, Rehfeld J, Goldstein M, Hökfelt T, Bunney B. Peptide-monoamine coexistence: Studies of the actions of cholecystokinin-like peptide on the electrical activity of midbrain dopamine neurons. Neuroscience 1981, 6: 2111-2124. PMID: 6120481, DOI: 10.1016/0306-4522(81)90002-6.Peer-Reviewed Original ResearchConceptsCholecystokinin-like peptidesVentral tegmental areaDopaminergic neuronsFiring rateSubstantia nigraTegmental areaDopaminergic cellsExtracellular single-unit recording techniquesMidbrain dopamine-containing neuronsSingle-unit recording techniquesDopamine-containing neuronsBrain dopaminergic systemDopamine-rich areasMidbrain dopamine neuronsDepolarization inactivationResponsive neuronsDopamine neuronsDopaminergic systemComparable dosesTyrosine hydroxylaseCholecystokininBursting activityNeuronsImmunocytochemical techniquesRecording techniques
1980
Peripheral 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