2025
Subcortical Structures and Epilepsy.
Herlopian A. Subcortical Structures and Epilepsy. Stereotactic And Functional Neurosurgery 2025, 1-32. PMID: 40911506, DOI: 10.1159/000548279.Peer-Reviewed Original ResearchSubcortical structuresCortical-subcortical networksSubcortical circuitsLimbic systemNeuromodulation studiesCortical structuresNetwork disorderEpilepsyRisk of surgical failureFocal epilepsySeizure initiationEpilepsy researchNetwork dynamicsCritical nodesThalamusSeizuresFocus modelDisordersSurgical failureNeuromodulationDiagnostic evaluationEpileptic networkTherapeutic strategiesParadigmPatient outcomes
2024
Multifocal Epilepsy Due to New-Onset Refractory Status Epilepticus
Herlopian A, Gunawardane N. Multifocal Epilepsy Due to New-Onset Refractory Status Epilepticus. 2024, 497-532. DOI: 10.1007/978-3-031-23828-4_21.Peer-Reviewed Original ResearchRefractory status epilepticusStatus epilepticusNew-onset refractory status epilepticusOnset refractory status epilepticusSuper-refractory status epilepticusSingle pulse electrical stimulationCortico-cortical evoked potentialsResponsive neurostimulation deviceNew-onsetMultifocal epilepsySurgical interventionNeuroimaging characteristicsEpilepticusPulse electrical stimulationEpileptic networkEvaluate functional connectivityPatientsCortical stimulationNeurostimulation devicesElectrical stimulationFunctional connectivityLanguage mappingStimulationAcquired, Lesional Lennox-Gastaut Syndrome
Herlopian A. Acquired, Lesional Lennox-Gastaut Syndrome. 2024, 919-943. DOI: 10.1007/978-3-031-23828-4_37.Peer-Reviewed Original ResearchCentromedian nucleusConfirm electrode placementGeneralized atonic seizuresLennox-Gastaut syndromeCentromedian thalamic nucleusLanguage lateralizationPost-operative language deficitsRare entityLennox-GastautCorpus callosotomySurgical interventionCortical malformationsAtonic seizuresSurgical proceduresThalamic nucleiCorpus callosumEpileptic networkDeep brain stimulation devicesLanguage deficitsNeurostimulation devicesElectrode placementPatientsNeurophysiological recordingsEpilepsyLanguageNon-dominant, Lesional Neocortical Temporal Lobe Epilepsy
Herlopian A. Non-dominant, Lesional Neocortical Temporal Lobe Epilepsy. 2024, 105-134. DOI: 10.1007/978-3-031-23828-4_6.Peer-Reviewed Original ResearchVacuolating neuronal tumorInterictal high-frequency oscillationsDysembryoplastic neuroepithelial tumorEpileptic networkSurgical decision-making processFocal cortical dysplasiaNeuroepithelial tumorsNeuronal tumorsRadiological findingsCortical dysplasiaClinical manifestationsIctal semiologyPharmacoresistant epilepsyDystonic posturingTumorHigh-frequency oscillationsStriatum- and Cerebellum-Modulated Epileptic Networks Varying Across States with and without Interictal Epileptic Discharges
Jiang S, Pei H, Chen J, Li H, Liu Z, Wang Y, Gong J, Wang S, Li Q, Duan M, Calhoun V, Yao D, Luo C. Striatum- and Cerebellum-Modulated Epileptic Networks Varying Across States with and without Interictal Epileptic Discharges. International Journal Of Neural Systems 2024, 34: 2450017. PMID: 38372049, DOI: 10.1142/s0129065724500175.Peer-Reviewed Original ResearchConceptsSalience networkSensorimotor cortexFunctional magnetic resonance imaging dataModerating effectInterictal epileptic dischargesIdiopathic generalized epilepsyMagnetic resonance imaging dataInteraction of regionsDecreased connectivityStriatumDMNThalamocortical circuitsCortical interactionsSimultaneous electroencephalogramCortical targetsEpileptic dischargesCerebellumThalamusHierarchical connectionEpileptic networkNeuromodulation techniquesIndirect moderating effectStateCryptogenic etiology
2022
Interictal-period-activated neuronal ensemble in piriform cortex retards further seizure development
Lai N, Cheng H, Li Z, Wang X, Ruan Y, Qi Y, Yang L, Fei F, Dai S, Chen L, Zheng Y, Xu C, Fang J, Wang S, Chen Z, Wang Y. Interictal-period-activated neuronal ensemble in piriform cortex retards further seizure development. Cell Reports 2022, 41: 111798. PMID: 36516780, DOI: 10.1016/j.celrep.2022.111798.Peer-Reviewed Original ResearchConceptsGeneralized seizuresActivity-dependent labeling techniquesInterictal periodSeizure developmentIP-enabledNeuronal ensemblesPiriform cortexPotential therapeutic targetCircuit rearrangementsOptogenetic activationHistological evidenceFocal seizuresIctal eventsSeizure generationControlling coherenceCellular mechanismsEpileptic networkSeizuresTherapeutic targetInterictal statePiriform
2014
The spatial and signal characteristics of physiologic high frequency oscillations
Alkawadri R, Gaspard N, Goncharova II, Spencer DD, Gerrard JL, Zaveri H, Duckrow RB, Blumenfeld H, Hirsch LJ. The spatial and signal characteristics of physiologic high frequency oscillations. Epilepsia 2014, 55: 1986-1995. PMID: 25470216, PMCID: PMC5123742, DOI: 10.1111/epi.12851.Peer-Reviewed Original ResearchConceptsPhysiologic high-frequency oscillationsSeizure onsetEpileptic networkNon-rapid eye movement sleepComprehensive Epilepsy CenterMesial temporal structuresEye movement sleepHigh-frequency oscillationsHighest HFO ratesFirst seizureInvasive evaluationEpilepsy centersIntracranial evaluationMovement sleepPerirolandic regionEpileptiform dischargesParietooccipital regionOccipital lobeEpileptic sitesPatientsNonepileptic regionsPhysiologic eventsFast ripplesHFO ratesLonger durationSubclinical seizures during intracranial EEG recording: Are they clinically significant?
Farooque P, Duckrow R. Subclinical seizures during intracranial EEG recording: Are they clinically significant? Epilepsy Research 2014, 108: 1790-1796. PMID: 25306063, DOI: 10.1016/j.eplepsyres.2014.09.020.Peer-Reviewed Original ResearchConceptsPoor surgical outcomesGood surgical outcomeSubclinical seizuresSurgical outcomesClinical seizuresIntracranial EEG recordingsGroup 2Group 1Extra-temporal lobe epilepsySeizure onset regionEEG recordingsExtra-temporal originResection correlatesSurgical resectionLobe epilepsyPoor outcomePrognostic valueClinical significanceBetter outcomesPatientsSeizuresEpileptic networkOnset zoneDifferent anatomical regionsEpilepsy database
2012
Metabolic networks in epilepsy by MR spectroscopic imaging
Pan JW, Spencer DD, Kuzniecky R, Duckrow RB, Hetherington H, Spencer SS. Metabolic networks in epilepsy by MR spectroscopic imaging. Acta Neurologica Scandinavica 2012, 126: 411-420. PMID: 22574807, PMCID: PMC3600585, DOI: 10.1111/j.1600-0404.2012.01665.x.Peer-Reviewed Original ResearchConceptsMTLE patientsBasal gangliaEpileptic networkMesial temporal lobe epilepsy patientsTemporal lobe epilepsy patientsLimbic seizure propagationBilateral basal gangliaNAA/CrMR spectroscopicIpsilateral insulaSeizure propagationBilateral hippocampusEpilepsy patientsHuman studiesIndependent factorsPatientsNeuronal functionThalamusGangliaEpilepsyInsulaFactor analysisFactorsHippocampusInjury
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