2009
Fractal Characterization of Complexity in Dynamic Signals: Application to Cerebral Hemodynamics
Herman P, Kocsis L, Eke A. Fractal Characterization of Complexity in Dynamic Signals: Application to Cerebral Hemodynamics. Methods In Molecular Biology 2009, 489: 23-40. PMID: 18839086, DOI: 10.1007/978-1-59745-543-5_2.Peer-Reviewed Original ResearchConceptsCerebral hemodynamicsBrain cortexRat brain cortexLaser Doppler flowmetryAge-related stiffeningFunctional magnetic resonanceHemodynamic brain signalsDoppler flowmetryCerebral vasculatureTemporal lobeHuman studiesState of pathologyGray matterParenchymal regionsHemodynamic signalsHemodynamicsHuman brainCortexMagnetic resonanceMedical significance
2006
Nonlinear Analysis of Blood Cell Flux Fluctuations in the Rat Brain Cortex during Stepwise Hypotension Challenge
Herman P, Eke A. Nonlinear Analysis of Blood Cell Flux Fluctuations in the Rat Brain Cortex during Stepwise Hypotension Challenge. Cerebrovascular And Brain Metabolism Reviews 2006, 26: 1189-1197. PMID: 16395288, DOI: 10.1038/sj.jcbfm.9600266.Peer-Reviewed Original ResearchFractal and Noisy CBV Dynamics in Humans: Influence of Age and Gender
Eke A, Hermán P, Hajnal M. Fractal and Noisy CBV Dynamics in Humans: Influence of Age and Gender. Cerebrovascular And Brain Metabolism Reviews 2006, 26: 891-898. PMID: 16292253, DOI: 10.1038/sj.jcbfm.9600243.Peer-Reviewed Original Research
2000
Physiological time series: distinguishing fractal noises from motions
Eke A, Hermán P, Bassingthwaighte J, Raymond G, Percival D, Cannon M, Balla I, Ikrényi C. Physiological time series: distinguishing fractal noises from motions. Pflügers Archiv - European Journal Of Physiology 2000, 439: 403-415. PMID: 10678736, DOI: 10.1007/s004249900135.Peer-Reviewed Original Research
1994
Light Intensity Attenuation in the Rat Brain Tissue Assessed by Television Photometry
Eke A, Ikrényi C, Sárváry E. Light Intensity Attenuation in the Rat Brain Tissue Assessed by Television Photometry. Advances In Experimental Medicine And Biology 1994, 345: 643-650. PMID: 8079768, DOI: 10.1007/978-1-4615-2468-7_85.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrainCerebral CortexCerebrovascular CirculationIn Vitro TechniquesLightRatsRats, WistarScattering, RadiationSpectrophotometryTelevisionConceptsWavelength rangeTime-resolved spectroscopyVisible wavelength rangeShort wavelength rangeLight intensity attenuationDirect measurementOptical pathlengthAttenuation of lightOptical approachPhoton migrationNear-Infrared LightOptical imagingAbsolute measurementsReflectometric measurementsInfrared lightIntensity attenuationNon-destructive natureLight attenuation profilesSignal contributionsAttenuation profilesTemporal resolutionMeasurementsMultiparametric imagingPhotonsLight penetration
1993
A mathematical model of the intracerebral steal phenomenon in regional and focal ischaemia
Hudetz A, Conger K, Eke A, Halsey J. A mathematical model of the intracerebral steal phenomenon in regional and focal ischaemia. Neurological Research 1993, 15: 117-127. PMID: 8099206, DOI: 10.1080/01616412.1993.11740121.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrain IschemiaCerebrovascular CirculationComputer SimulationIschemic Attack, TransientMathematicsModels, CardiovascularRatsRats, Inbred SHRRats, Sprague-DawleyVasodilationConceptsMathematical model
1992
Instrumentation and Technology for Multiparametric Mapping of Intraparenchymal Circulation in the Brain Cortex
Eke A. Instrumentation and Technology for Multiparametric Mapping of Intraparenchymal Circulation in the Brain Cortex. Advances In Experimental Medicine And Biology 1992, 317: 671-678. PMID: 1288187, DOI: 10.1007/978-1-4615-3428-0_80.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCatsCerebral CortexCerebrovascular CirculationErythrocytesHaplorhiniMicrocirculationRabbitsRatsRegional Blood FlowTelevisionVideotape RecordingConceptsBrain cortexSpatial resolutionRepeatable mannerVolume flowEnergy balanceSpatial imagingTechnologyMean transit timeInstrumentationBlood volumeLevel of instrumentationMultiparametric assessmentDischarge hematocritResolution mapsPlasma volumeCapillary bedHigh-resolution mapsCortexMultiparametric mappingMm2
1989
Hematocrit Changes in the Extra- and Intraparenchymal Circulation of the Feline Brain Cortex in the Course of Global Cerebral Ischemia
Eke A. Hematocrit Changes in the Extra- and Intraparenchymal Circulation of the Feline Brain Cortex in the Course of Global Cerebral Ischemia. Advances In Experimental Medicine And Biology 1989, 248: 439-449. PMID: 2782165, DOI: 10.1007/978-1-4684-5643-1_49.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBlood PressureBrain IschemiaCatsCerebral CortexCerebrovascular CirculationErythrocytesFemaleHematocritHemorrhageMalePlasma VolumeRegional Blood FlowConceptsGlobal cerebral ischemiaCerebral ischemiaTissue hematocritMean arterial blood pressureArterial blood pressureIschemic tissue damageCerebrocortical tissueParenchymal circulationBlood pressureArterial hemorrhageBrain cortexIschemic conditionsAltered distribution patternHematocrit changesTissue damageFocal alterationsSignificant heterogeneityIschemiaHematocritControl conditionPresent studyPreliminary studyHemorrhageMicrocirculationCortex
1984
Distribution of Cerebrocortical Microflow in Normo- and Hypertensive Rats
Eke A, Halsey J. Distribution of Cerebrocortical Microflow in Normo- and Hypertensive Rats. Advances In Experimental Medicine And Biology 1984, 180: 203-210. PMID: 6534100, DOI: 10.1007/978-1-4684-4895-5_19.Peer-Reviewed Original ResearchMeSH KeywordsAdaptation, PhysiologicalAnimalsBrain IschemiaCerebral CortexCerebrovascular CirculationHypertensionMaleMicrocirculationRatsRats, Inbred SHRRegional Blood FlowVascular ResistanceConceptsHypertensive brainHypertensive ratsCirculatory adaptationBilateral carotid ligationTransient ischemic episodesNormotensive animalsCarotid ligationVascular caliberIschemic episodesBlood flowIntraparenchymal distributionBlood contentCerebrocortical microflowRatsBrainNormotensiveIschemiaRCBFNormo
1978
Transient Metabolic and Vascular Volume Changes Following Rapid Blood Pressure Alterations Which Precede the Autoregulatory Vasodilation of Cerebrocortical Vessels
Kovách A, Dóra E, Hamar J, Eke A, Szabó L. Transient Metabolic and Vascular Volume Changes Following Rapid Blood Pressure Alterations Which Precede the Autoregulatory Vasodilation of Cerebrocortical Vessels. Advances In Experimental Medicine And Biology 1978, 94: 705-711. PMID: 207169, DOI: 10.1007/978-1-4684-8890-6_97.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBlood PressureCatsCerebral ArteriesCerebral CortexCerebrovascular CirculationFluorescenceHomeostasisNADPhenoxybenzamineVasodilationConceptsArterial blood pressureCerebral blood flowBlood pressureBlood pressure alterationsEffect of phenoxybenzamineVascular volume changesCBF autoregulationCerebrocortical vesselsAutoregulatory vasodilationPial vesselsBlood flowPressure alterationsVascular volumeTransient decreaseMetabolic changesExact mechanismLate increasePresent studyBiphasic natureAlterationsInitial observationsVesselsPhenoxybenzamineTransitory changesVasodilation
1977
The protecting action of a combination of vasoactivating substances (CRP) on disturbances of the cerebral blood flow and metabolism and the cortical electrical activity (author's transl).
Dora E, Gyulay L, Kovach A, Eke A. The protecting action of a combination of vasoactivating substances (CRP) on disturbances of the cerebral blood flow and metabolism and the cortical electrical activity (author's transl). Drug Research 1977, 27: 108-11. PMID: 192249.Peer-Reviewed Original ResearchConceptsBlood flowMean arterial pressureDirect cortical stimulationCerebral blood flowBlood pressure dropCortical electrical activityArterial pressureCortical stimulationHemorrhagic shockNormal animalsEffects of anoxiaBeneficial effectsElectrical activityBrain circulationCortical cellsOxygen supplyFurther evidenceMetabolism