2015
Imaging Submillisecond Membrane Potential Changes from Individual Regions of Single Axons, Dendrites and Spines
Popovic M, Vogt K, Holthoff K, Konnerth A, Salzberg BM, Grinvald A, Antic SD, Canepari M, Zecevic D. Imaging Submillisecond Membrane Potential Changes from Individual Regions of Single Axons, Dendrites and Spines. Advances In Experimental Medicine And Biology 2015, 859: 57-101. PMID: 26238049, PMCID: PMC5671121, DOI: 10.1007/978-3-319-17641-3_3.Peer-Reviewed Original ResearchConceptsIndividual neuronsMembrane potential changesVoltage-sensitive dye recordingAction potential initiationIndividual dendritic spinesSite of originAxon collateralsIndividual nerve cellsMembrane potential transientsVoltage-sensitive dyeDendritic spinesRegional electrical propertiesDendritic treeNerve cellsNeuronal processesSingle axonsPotential initiationComplex operational unitsBehavioral modificationNeuronal network analysisNeuronsInput-output functionMultisite recordings
2012
Voltage-sensitive dye recording from axons, dendrites and dendritic spines of individual neurons in brain slices.
Popovic M, Gao X, Zecevic D. Voltage-sensitive dye recording from axons, dendrites and dendritic spines of individual neurons in brain slices. Journal Of Visualized Experiments 2012, e4261. PMID: 23222505, PMCID: PMC3565854, DOI: 10.3791/4261.Peer-Reviewed Original ResearchConceptsLaser light sourceSub-micrometer resolutionLight sourceOptical recordingDetectable pharmacological effectsCurrent sensitivityVoltage-sensitive dyeSubthreshold eventsElectrical propertiesDetailed measurementsMultiple-site optical recordingVoltage-sensitive dye recordingFluorescence signalOptimal wavelengthsMembrane potential transientsElectrical signalsIndividual dendritic spinesExperimental evidenceWavelengthMeasurement oneMeasurementsBroadeningDye loadingPotential transientsBrightness
2011
Somatic Membrane Potential and Kv1 Channels Control Spike Repolarization in Cortical Axon Collaterals and Presynaptic Boutons
Foust AJ, Yu Y, Popovic M, Zecevic D, McCormick DA. Somatic Membrane Potential and Kv1 Channels Control Spike Repolarization in Cortical Axon Collaterals and Presynaptic Boutons. Journal Of Neuroscience 2011, 31: 15490-15498. PMID: 22031895, PMCID: PMC3225031, DOI: 10.1523/jneurosci.2752-11.2011.Peer-Reviewed Original ResearchMeSH Keywords4-AminopyridineAnimalsAxonsBiophysical PhenomenaComputer SimulationCrystallinsDose-Response Relationship, DrugElapid VenomsElectric StimulationFemaleGreen Fluorescent ProteinsIn Vitro TechniquesMaleMembrane PotentialsMiceMice, TransgenicModels, NeurologicalMu-CrystallinsNerve NetNeuronsPatch-Clamp TechniquesPotassium Channel BlockersPresynaptic TerminalsShaker Superfamily of Potassium ChannelsSomatosensory CortexStyrenesTetraethylammoniumConceptsAxon collateralsPresynaptic boutonsKv1 channelsSpike repolarizationPresynaptic terminalsSubthreshold depolarizationAction potentialsΑ-dendrotoxinLayer 5 pyramidal cellsIntracortical axon collateralsSynaptic neurotransmitter releaseMouse brain slicesSomatic membrane potentialKv1 subunitsPyramidal cellsSynaptic transmissionBrain slicesVoltage-sensitive dyeLow dosesNeurotransmitter releaseSynaptic strengthBoutonsCollateralsRepolarizationIon channelsThe spatio‐temporal characteristics of action potential initiation in layer 5 pyramidal neurons: a voltage imaging study
Popovic MA, Foust AJ, McCormick DA, Zecevic D. The spatio‐temporal characteristics of action potential initiation in layer 5 pyramidal neurons: a voltage imaging study. The Journal Of Physiology 2011, 589: 4167-4187. PMID: 21669974, PMCID: PMC3180577, DOI: 10.1113/jphysiol.2011.209015.Peer-Reviewed Original ResearchConceptsSpike trigger zoneAction potential initiationAxon initial segmentTrigger zoneLayer 5 pyramidal neuronsPotential initiationLayer 5 pyramidal cellsMature axonsPyramidal neuronsAxonal collateralsPyramidal cellsNeuronal plasticityAction potentialsImmature axonsPotential imaging techniqueAxonsImmunocytochemical dataNeuronal computationSaltatory conductionAP propagationElectrophysiological measuresInitial segmentImaging techniquesCritical roleInitiation
2010
Action Potentials Initiate in the Axon Initial Segment and Propagate through Axon Collaterals Reliably in Cerebellar Purkinje Neurons
Foust A, Popovic M, Zecevic D, McCormick DA. Action Potentials Initiate in the Axon Initial Segment and Propagate through Axon Collaterals Reliably in Cerebellar Purkinje Neurons. Journal Of Neuroscience 2010, 30: 6891-6902. PMID: 20484631, PMCID: PMC2990270, DOI: 10.1523/jneurosci.0552-10.2010.Peer-Reviewed Original ResearchConceptsAxon initial segmentAxon collateralsAction potentialsPurkinje neuronsComplex spikesLocal axon collateralsCerebellar Purkinje neuronsInitial segmentFast action potentialsAxon branch pointsSynaptic inputsVoltage-sensitive dyeCerebellar cortexNeuronal processingSpike initiationDischarge frequencySingle trialCollateralsOutput cellsNeuronsImaging Inhibitory Synaptic Potentials Using Voltage Sensitive Dyes
Canepari M, Willadt S, Zecevic D, Vogt KE. Imaging Inhibitory Synaptic Potentials Using Voltage Sensitive Dyes. Biophysical Journal 2010, 98: 2032-2040. PMID: 20441768, PMCID: PMC2862202, DOI: 10.1016/j.bpj.2010.01.024.Peer-Reviewed Original ResearchConceptsInhibitory postsynaptic potentialsVoltage-sensitive dyeGABAergic inhibitory postsynaptic potentialsCA1 hippocampal pyramidal neuronsPatch electrodeInhibitory synaptic potentialsInhibitory synaptic transmissionHippocampal pyramidal neuronsIntracellular chloride concentrationWhole-cell configurationPyramidal neuronsApical dendritesPostsynaptic potentialsSynaptic potentialsSynaptic transmissionBrain slicesElectrode recordingsNeuronsSensitive dyeVoltage imaging techniqueDendritesMultiple sitesVoltage imagingAxons
2005
Imaging of Spiking and Subthreshold Activity of Mitral Cells with Voltage‐Sensitive Dyes
DJURIŠIĆ M, ZEČEVIĆ D. Imaging of Spiking and Subthreshold Activity of Mitral Cells with Voltage‐Sensitive Dyes. Annals Of The New York Academy Of Sciences 2005, 1048: 92-102. PMID: 16154924, DOI: 10.1196/annals.1342.009.Peer-Reviewed Original ResearchConceptsSpike trigger zoneMitral cellsSite of originTrigger zonePrincipal output neuronsTerminal dendritic branchesPrimary dendritesOlfactory nerve stimulationRat olfactory bulbNerve stimulationDendritic tuftsOlfactory bulbVoltage-sensitive dyeAction potentialsNeuronal processesSubthreshold activityIndividual neuronsDendritic branchesSpike initiationIntracellular dyeEPSPsOutput neuronsNeuronsDendritesCells
2000
Functional profile of the giant metacerebral neuron of Helix aspersa: temporal and spatial dynamics of electrical activity in situ
Antic S, Wuskell J, Loew L, Zecevic D. Functional profile of the giant metacerebral neuron of Helix aspersa: temporal and spatial dynamics of electrical activity in situ. The Journal Of Physiology 2000, 527: 55-69. PMID: 10944170, PMCID: PMC2270048, DOI: 10.1111/j.1469-7793.2000.00055.x.Peer-Reviewed Original ResearchConceptsTrigger zoneNeuronal processesGiant metacerebral neuronSingle neuronsMulti-site optical recordingSpike trigger zoneAction potential initiationIdentified snail neuronsMetacerebral neuronsAxonal branchesVoltage-sensitive dyeSynaptic inputsPropagation of spikesSnail neuronsAction potentialsAxonal spikesPatterns of initiationNeuronsPotential initiationSynaptic signalsIndividual neuronsElectrical activityHelix aspersaFunctional profilesInitiation