2025
Decreased locus coeruleus multiunit activity in a mouse model of temporal lobe seizures with impaired consciousness
Valcarce-Aspegren M, Paszkowski P, Liu S, Wu Q, McGill S, Sieu L, Blumenfeld H. Decreased locus coeruleus multiunit activity in a mouse model of temporal lobe seizures with impaired consciousness. Experimental Neurology 2025, 389: 115233. PMID: 40189126, PMCID: PMC12083539, DOI: 10.1016/j.expneurol.2025.115233.Peer-Reviewed Original ResearchConceptsLocus coeruleusFocal limbic seizuresLimbic seizuresRight orbitofrontal cortexFiring of LC neuronsBasal forebrain cholinergic neuronsForebrain cholinergic neuronsAwake mouse modelHead-fixed miceOrbitofrontal cortexDorsal hippocampiImpaired consciousnessMouse modelTemporal lobe epilepsyCortical impairmentLC neuronsNoradrenergic pathwaysRecording multiunit activitySubcortical pathwaysMultiunit activityCholinergic neuronsTemporal lobe seizuresPeriod of impaired consciousnessRodent modelsLobe epilepsy
2019
Up and Down States of Cortical Neurons in Focal Limbic Seizures
Yue Z, Freedman IG, Vincent P, Andrews JP, Micek C, Aksen M, Martin R, Zuckerman D, Perrenoud Q, Neske GT, Sieu LA, Bo X, Cardin JA, Blumenfeld H. Up and Down States of Cortical Neurons in Focal Limbic Seizures. Cerebral Cortex 2019, 30: 3074-3086. PMID: 31800015, PMCID: PMC7197089, DOI: 10.1093/cercor/bhz295.Peer-Reviewed Original ResearchConceptsFocal limbic seizuresDeep anesthesiaLimbic seizuresCortical neuronsVivo whole-cell recordingsDepressed cortical functionInput resistanceNeocortical slow wavesSubcortical arousal systemsLoss of consciousnessWhole-cell recordingsCortical-subcortical networksSeizure propagationMembrane potentialRat modelCortical functionTemporal lobeSeizuresCortical arousalExtracellular recordingsElectrophysiological propertiesCortical electrophysiologyFiring rateAnesthesiaArousal system
2017
Seizures and Sleep in the Thalamus: Focal Limbic Seizures Show Divergent Activity Patterns in Different Thalamic Nuclei
Feng L, Motelow JE, Ma C, Biche W, McCafferty C, Smith N, Liu M, Zhan Q, Jia R, Xiao B, Duque A, Blumenfeld H. Seizures and Sleep in the Thalamus: Focal Limbic Seizures Show Divergent Activity Patterns in Different Thalamic Nuclei. Journal Of Neuroscience 2017, 37: 11441-11454. PMID: 29066556, PMCID: PMC5700426, DOI: 10.1523/jneurosci.1011-17.2017.Peer-Reviewed Original ResearchConceptsFocal limbic seizuresLimbic seizuresCentral lateralDifferent thalamic nucleiSeizure propagationThalamic nucleiNeuronal activityDivergent activity patternsFocal temporal lobe seizuresDepressed cortical functionDifferent thalamic regionsLimbic seizure propagationTemporal lobe seizuresFemale rat modelTemporal lobe epilepsySleep spindlesImpairment of consciousnessSubcortical arousal systemsVentral posteromedial nucleusSlow-wave sleepOverall firing rateQuality of lifeThalamocortical network activityThalamocortical information flowActivity patterns
2016
Restoring Conscious Arousal During Focal Limbic Seizures with Deep Brain Stimulation
Kundishora AJ, Gummadavelli A, Ma C, Liu M, McCafferty C, Schiff ND, Willie JT, Gross RE, Gerrard J, Blumenfeld H. Restoring Conscious Arousal During Focal Limbic Seizures with Deep Brain Stimulation. Cerebral Cortex 2016, 27: 1964-1975. PMID: 26941379, PMCID: PMC5964488, DOI: 10.1093/cercor/bhw035.Peer-Reviewed Original ResearchConceptsFocal limbic seizuresDeep brain stimulationLimbic seizuresBrain stimulationImpaired consciousnessNetwork inhibition hypothesisRisk of mortalityNovel therapeutic approachesDual-site stimulationCentral lateral nucleusDisorders of consciousnessQuality of lifeFocal limbicSurgical therapyRefractory epilepsyFocal seizuresNucleus oralisBilateral stimulationIntralaminar thalamusRat modelTherapeutic approachesLateral nucleusBehavioral arousalConscious arousalResponsive neurostimulation
2015
Optogenetic stimulation of cholinergic brainstem neurons during focal limbic seizures: Effects on cortical physiology
Furman M, Zhan Q, McCafferty C, Lerner BA, Motelow JE, Meng J, Ma C, Buchanan GF, Witten IB, Deisseroth K, Cardin JA, Blumenfeld H. Optogenetic stimulation of cholinergic brainstem neurons during focal limbic seizures: Effects on cortical physiology. Epilepsia 2015, 56: e198-e202. PMID: 26530287, PMCID: PMC4679683, DOI: 10.1111/epi.13220.Peer-Reviewed Original ResearchConceptsFocal limbic seizuresLimbic seizuresCortical functionBrainstem neuronsCortical dysfunctionFocal temporal lobe seizuresOptogenetic stimulationCortical slow-wave activityDepressed cortical functionSubcortical cholinergic neuronsTemporal lobe seizuresLoss of consciousnessPedunculopontine tegmental nucleusAnesthetized rat modelSlow wave activityCortical gamma activitySleep-like stateCholinergic neuronsFocal seizuresArousal networkCholinergic stimulationTegmental nucleusRat modelCortical physiologySeizures
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