Omar Hafez
About
Research
Publications
2024
Regulation of cardiac function by the autonomic nervous system
Hafez O, Chang R. Regulation of cardiac function by the autonomic nervous system. Physiology 2024 PMID: 39585760, DOI: 10.1152/physiol.00018.2024.Peer-Reviewed Original ResearchAutonomic nervous systemNervous systemNeurocardiac axisIntrinsic cardiac nervous systemRegulation of cardiac functionCardiac nervous systemAutonomic control of the heartRegulating cardiovascular physiologyAutonomic dysfunctionSensory neuronsCardiac functionParasympathetic nervous systemClinical conditionsCardiac reflexesThe heartNeuronal populationsTreatment approachesCardiovascular diseaseCardiovascular physiologyMotor circuitsPhysiological roleAutonomic controlClinical fieldHeartDysfunction
2023
The cellular architecture of memory modules in Drosophila supports stochastic input integration
Hafez O, Escribano B, Ziegler R, Hirtz J, Niebur E, Pielage J. The cellular architecture of memory modules in Drosophila supports stochastic input integration. ELife 2023, 12: e77578. PMID: 36916672, PMCID: PMC10069864, DOI: 10.7554/elife.77578.Peer-Reviewed Original ResearchConceptsKenyon cellsDecision moduleEfficient storageComputational principlesMushroom bodiesMB output neuronsPatch-clamp recordingsSpiking behaviorOutput neuronsMemory modulesInput integrationOdor inputSynaptic inputsStochastic connectionsArchitectureSynaptic localizationSynaptic connectionsDecision makingComputational modelInputMemoryNeuronsCellular architectureValenced informationModulation
2020
Altered neuronal excitability in a Hodgkin-Huxley model incorporating channelopathies of the delayed rectifier potassium channel
Hafez O, Gottschalk A. Altered neuronal excitability in a Hodgkin-Huxley model incorporating channelopathies of the delayed rectifier potassium channel. Journal Of Computational Neuroscience 2020, 48: 377-386. PMID: 33063225, DOI: 10.1007/s10827-020-00766-1.Peer-Reviewed Original ResearchConceptsRectifying K+ channelsDelayed rectifier K+ channelsNeuronal excitabilityK+ channelsEnhanced neuronal excitabilityK+ channels Kv1.1HH modelKv1.1 channelsChannelopathiesHodgkin-HuxleyHodgkin-Huxley (HH) modelNeural excitabilityMaximal conductanceVoltage sensitivityKv1.1Hodgkin-Huxley modelModify excitabilityRate of activationNeural activityGenetic modificationModel of neural excitation