2024
Slow and fast cortical cholinergic arousal is reduced in a mouse model of focal seizures with impaired consciousness
Sieu L, Singla S, Liu J, Zheng X, Sharafeldin A, Chandrasekaran G, Valcarce-Aspegren M, Niknahad A, Fu I, Doilicho N, Gummadavelli A, McCafferty C, Crouse R, Perrenoud Q, Picciotto M, Cardin J, Blumenfeld H. Slow and fast cortical cholinergic arousal is reduced in a mouse model of focal seizures with impaired consciousness. Cell Reports 2024, 43: 115012. PMID: 39643969, PMCID: PMC11817788, DOI: 10.1016/j.celrep.2024.115012.Peer-Reviewed Original ResearchCortical slow wavesFocal seizuresBehavioral responsesAuditory stimuliImpaired behavioral responsesFocal temporal lobe seizuresImpaired consciousnessMouse modelAwake mouse modelResponses to auditory stimuliBehavioral responses to auditory stimuliDecreased cortical arousalImpaired behaviorSlow wavesTemporal lobe seizuresCholinergic releaseModel of focal seizuresHigh-frequency activityCortical functionCortical arousalDepressed cortical functionSubcortical arousalArousalAcetylcholine releaseRat model
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
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
2010
Impaired consciousness in temporal lobe seizures: role of cortical slow activity
Englot DJ, Yang L, Hamid H, Danielson N, Bai X, Marfeo A, Yu L, Gordon A, Purcaro MJ, Motelow JE, Agarwal R, Ellens DJ, Golomb JD, Shamy MC, Zhang H, Carlson C, Doyle W, Devinsky O, Vives K, Spencer DD, Spencer SS, Schevon C, Zaveri HP, Blumenfeld H. Impaired consciousness in temporal lobe seizures: role of cortical slow activity. Brain 2010, 133: 3764-3777. PMID: 21081551, PMCID: PMC2995886, DOI: 10.1093/brain/awq316.Peer-Reviewed Original ResearchConceptsTemporal lobe seizuresSlow wave activityTemporal lobe epilepsySimple partial seizuresSubcortical arousal systemsImpaired consciousnessSeizure activityTemporal lobeLobe epilepsyArousal systemCortical functionFocal temporal lobe seizuresHz slow wave activityMesial temporal lobe epilepsyCortical slow activityDepressed cortical functionNetwork inhibition hypothesisTemporal lobe disordersComplex partial seizuresBilateral temporal lobesLanguage-dominant temporal lobeSlow wavesCortical-subcortical networksPowerful inhibitory effectIntracranial electroencephalography recordings
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