2024
Neuronal rhythmicity and cortical arousal in a mouse model of absence epilepsy
Khan W, Chopra S, Zheng X, Liu S, Paszkowski P, Valcarce-Aspegren M, Sieu L, Mcgill S, Mccafferty C, Blumenfeld H. Neuronal rhythmicity and cortical arousal in a mouse model of absence epilepsy. Experimental Neurology 2024, 381: 114925. PMID: 39151596, DOI: 10.1016/j.expneurol.2024.114925.Peer-Reviewed Original ResearchExtracellular single unit recordingsSingle unit recordingsMouse modelNeuronal firingAbsence epilepsyFiring patternsRat modelSeizure initiationMouse model of absence epilepsyIn vivo extracellular single unit recordingNeuronal activityUnit recordingsModel of absence epilepsySomatosensory barrel cortexC3H/HeJ mouse modelNeuronal firing rateHuman absence epilepsyDiverse firing patternsNeuronal rhythmicityArousal stateC3H/HeJ miceBarrel cortexStudy of neuronal activityCortical electroencephalographyFiring rate
2023
Decreased but diverse activity of cortical and thalamic neurons in consciousness-impairing rodent absence seizures
McCafferty C, Gruenbaum B, Tung R, Li J, Zheng X, Salvino P, Vincent P, Kratochvil Z, Ryu J, Khalaf A, Swift K, Akbari R, Islam W, Antwi P, Johnson E, Vitkovskiy P, Sampognaro J, Freedman I, Kundishora A, Depaulis A, David F, Crunelli V, Sanganahalli B, Herman P, Hyder F, Blumenfeld H. Decreased but diverse activity of cortical and thalamic neurons in consciousness-impairing rodent absence seizures. Nature Communications 2023, 14: 117. PMID: 36627270, PMCID: PMC9832004, DOI: 10.1038/s41467-022-35535-4.Peer-Reviewed Original ResearchConceptsThalamic neuronsAbsence seizuresSeizure onsetNeuronal firingConsciousness-impairing seizuresFemale rat modelLow-frequency electroencephalographic activityFunctional magnetic resonanceBehavioral arrestRat modelRhythmic firingTransient initial peakFiring increasesSeizuresNeuronal mechanismsElectroencephalographic activityNeuronsBrain state changesBrief episodesFiring decreasesInitial peakFiringMagnetic resonanceDistinct patternsOnset
2014
Physiological Basis of BOLD fMRI Decreases
Kim R, Hyder F, Blumenfeld H. Physiological Basis of BOLD fMRI Decreases. Neuromethods 2014, 88: 221-236. DOI: 10.1007/978-1-4939-0724-3_11.Peer-Reviewed Original ResearchCerebral blood flowCerebral blood volumeFMRI decreasesNeuronal activityLocal field potentialsNeuronal firingMagnetic resonance imaging (MRI) signal changesFunctional magnetic resonance imaging (fMRI) signal changesSpike-wave seizuresCortical slow oscillationsFMRI signal changesBOLD fMRI signalHippocampal seizuresSignal changesBasal gangliaDirect electrophysiological measurementsFMRI changesPhysiological basisSomatosensory stimulationBlood flowParadoxical decreaseAnimal modelsBlood volumeAnimal studiesCombined neuroimaging