王青云-生物神经元网络动力学的研究进展PPT推荐.ppt
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王青云-生物神经元网络动力学的研究进展PPT推荐.ppt
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SomeRecentStudyinBiologicalNeuronalOscillatoryNetworksQingyunWang(王青云)DepartmentofDynamicsandControl,BeihangUniversity,Beijing100191Email:
@#@11/7/20221WithcomplimentsaProf.LuQishao(BeihangUniversity)aProf.DuanZhiSheng(PekingUniversity)aProf.ChenGuanRong(CityUniversityofHongKong)aDr.MatjazPerc(UniversityofMaribor,Koroskacesta160,SI-2000Maribor,Slovenia)11/7/20222ContentsFMotivationFNeuronalstructureandnetworkFDynamicsofasingleneuronFSynchronizationtransitionandRhythmdynamicsonnetworksFBurstingDynamicsonRealisticNeuronalNetworksFSpatialResonanceinNeuronalNetworksFOpenproblems11/7/20223Thesingleneuroninthevertebratecortexconnectstomorethan10,000postsynapticneuronsviasynapsesformingcomplexnetworks.Thebiologicalnervoussystemcancommunicateandtransforminformationthroughinteractionofnetworks.Neuronalinformationencodingandprocessingarereflectedbyoscillationpatternsofelectricalimpulsesequencesinneurons.Motivation11/7/20224Neurodynamicsdealswiththedynamicsandcontrolproblemsofelectricalactivitiesandinformationprocessesinnervoussystemsandisimportantintheresearchofbiologicalmotionsandintelligentbehavior.Neurodynamicsisamulti-disciplinaryresearchareainnonlineardynamics,networkscienceandneuroscience.Synchronizationisofgreatimportanceforsignalencodingandtransductionininformationprocessingofneuronsintworespects.Biologicalneuronscanextractthehinderedinformationbystochasticresonance.11/7/202256NeuralMedicineandEngineeringNeuronalfiringandinformationencodingBiologicalControlBiologicalcomplexneuronalnetworksIntelligentRobotsBiologicalstructureofnervoussystemsNeuralCognitiveScienceNeuralComputersNeuralMedicalTechniques11/7/20226StructureofSingleNeuronAbasicelementforinformationprocessinginnervoussystems.Thereareabout1011neuronsinthehumanbrainand104synapsesforaneuron.11/7/20227Modelofneuron
(1)(4)(3)
(2)HodgkinA.L.,HuxleyA.F.,J.physiol.(London),1952,(117)500-544oHodgkin-Huxleymodel(1952NobelPrize)nChaymodel,HRmodel,FHNmodel,Rulkovmapetc.NonlinearODEsinvolvingmultipletimescales.Hardtoanalyzebothmathematicallyandcomputationally.11/7/20228Diversityoffiringpatternsofasingleneuron(inexperimentalneuralpacemakers)(LiLi,RenWei,2003,2004)11/7/20229Bifurcationscenario(intheoreticalmodelandexperimentalneuralpacemakers)(LiLi,RenWeietal,IJBC,2004.DuanLiXiaetal,Neurocomputing2008)Chaymodel11/7/202210Chaos(inexperimentalneuralpacemakers)betweenperiod2andperiod3firings(RenWei,IJBC,1997)11/7/20221111/7/202212NeuronalnetworksoWhatisaBrain?
@#@densenetworkmorethan104cellbodiesandseveralkilometersofwirespercubicmillimeter.Manytypesofcells:
@#@spikingneurons(1011cells),gliacells(supportercellsnotinvolvedintheinformationprocessing)andanalogneurons.11/7/202213Synapseanddelay11/7/202214Dorsalandlateralviewsoftheconnectivitybackboneofhumanbrain.Labelsindicatinganatomicalsubregionsareplacedattheirrespectivecentersofmass.Nodes(individualROIs)arecodedaccordingtostrengthandedgesarecodedaccordingtoconnectionweight.HagmannP,CammounL,GigandetX,MeuliR,HoneyCJ,WedeenVJ,SpornsO(2008)Mappingthestructuralcoreofhumancerebralcortex.PLoSBiologyVol.6,No.7,e15911/7/202215NeuronalnetworksNeuronalnetworksinvolvealargenumberofindividualneurons.Detailsoftheconnectivitynotusuallyknown.HardtoanalyzehowconnectivityinfluencesODEdynamics.11/7/202216NeuronalsynchronizationoSynchronizationseemstobeverycrucialfortheefficientprocessingandtransmissionofinformationacrossthenervesystem.oParkinsonstremorisrelatedtoneuronalsynchronization.oTransientlysynchronizedassembliesofneuronsarebelievedtounderliecognitivefunctions.oThereisconsistentevidenceforareductionofsynchronizationinschizophrenia.11/7/202217RobertC.Elsonetal,Phys.ReviewLett815692-56951998TwocoupledneuroncircuitSynchronizedmotions11/7/202218HuaGuangGUetal,CHIN.PHYS.LETT.Vol.26,No.11(2009)110501Experimentresults11/7/202219PNAS2010Listener-speakercanvalidlycommunicationbymeansofneuronalcoupling11/7/202220Classificationofsynchronization11/7/202221Burstsynchronizationanddesynchronizationinfold/homoclinic(square-wave)bursters.ShownaresimulationsofcoupledMorris-Lecarsystemswithadditionalslowvariables.Variousregimesofsynchronizationofbursters(modiedfromIzhikevich,2000a).11/7/202222Singularphaselocking11/7/202223AnalysismethodofphaselockingoSingularperturbationtheory(Termanetal,JComputNeurosci(2007)23:
@#@217235)Dynamicclusteringinthe(a)fulland(b)reducedmodels.TherearetwentypairsofE-andI-cells.EachE-cellexcitesoneI-cellandeachI-cellinhibitsthreeE-cellsLimited:
@#@Networkstructure,connectionstyle11/7/202224oPhaseresponsecurve(discretemapmethod)Carmen
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- 青云 生物 神经元 网络 动力学 研究进展