2017
Brain‐responsive neurostimulation in patients with medically intractable seizures arising from eloquent and other neocortical areas
Jobst BC, Kapur R, Barkley GL, Bazil CW, Berg MJ, Bergey GK, Boggs JG, Cash SS, Cole AJ, Duchowny MS, Duckrow RB, Edwards JC, Eisenschenk S, Fessler AJ, Fountain NB, Geller EB, Goldman AM, Goodman RR, Gross RE, Gwinn RP, Heck C, Herekar AA, Hirsch LJ, King‐Stephens D, Labar DR, Marsh WR, Meador KJ, Miller I, Mizrahi EM, Murro AM, Nair DR, Noe KH, Olejniczak PW, Park YD, Rutecki P, Salanova V, Sheth RD, Skidmore C, Smith MC, Spencer DC, Srinivasan S, Tatum W, Van Ness P, Vossler DG, Wharen RE, Worrell GA, Yoshor D, Zimmerman RS, Skarpaas TL, Morrell MJ. Brain‐responsive neurostimulation in patients with medically intractable seizures arising from eloquent and other neocortical areas. Epilepsia 2017, 58: 1005-1014. PMID: 28387951, DOI: 10.1111/epi.13739.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultBrain MappingCerebral CortexDeep Brain StimulationDrug Resistant EpilepsyElectric Stimulation TherapyElectrodes, ImplantedElectroencephalographyEpilepsies, PartialEpilepsy, Complex PartialEpilepsy, Partial, MotorEpilepsy, Tonic-ClonicFeasibility StudiesFemaleFollow-Up StudiesHumansMaleMiddle AgedNeocortexYoung AdultConceptsSeizure-free periodSeizure reductionNeocortical onsetSeizure onsetNeocortical originIntractable partial-onset seizuresMedian percent seizure reductionBrain-responsive neurostimulationChronic neurologic deficitsPercent seizure reductionPrior epilepsy surgeryPartial-onset seizuresPercent of patientsProspective clinical trialsNormal MRI findingsVagus nerve stimulationEffective treatment optionEloquent cortical areasRate of infectionMagnetic resonance imagingPreimplantation baselineMRI lesionsAdverse eventsNeurologic deficitsPerioperative hemorrhage
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 sleepHighest HFO ratesHigh-frequency oscillationsFirst seizureInvasive evaluationEpilepsy centersIntracranial evaluationMovement sleepPerirolandic regionEpileptiform dischargesParietooccipital regionOccipital lobeEpileptic sitesPatientsNonepileptic regionsPhysiologic eventsFast ripplesHFO ratesLonger duration
2009
Spatial distribution of intracranially recorded spikes in medial and lateral temporal epilepsies
Goncharova II, Zaveri HP, Duckrow RB, Novotny EJ, Spencer SS. Spatial distribution of intracranially recorded spikes in medial and lateral temporal epilepsies. Epilepsia 2009, 50: 2575-2585. PMID: 19674048, DOI: 10.1111/j.1528-1167.2009.02258.x.Peer-Reviewed Original ResearchConceptsMedial temporal structuresInterictal spikesLT patientsCortical areasNeocortical seizure onsetsSleep-related increaseSpike rateLateral temporal epilepsyExtratemporal areasTemporal epilepsySeizure onsetIntracranial monitoringLT groupMT groupPatientsFrontal spikesSeizuresGreater numberSleepGroupTemporal structureEpilepsySpikes
2008
Interictal spikes on intracranial recording: Behavior, physiology, and implications
Spencer SS, Goncharova II, Duckrow RB, Novotny EJ, Zaveri HP. Interictal spikes on intracranial recording: Behavior, physiology, and implications. Epilepsia 2008, 49: 1881-1892. PMID: 18479398, DOI: 10.1111/j.1528-1167.2008.01641.x.Peer-Reviewed Original ResearchConceptsInterictal spikesAED withdrawalSeizure onsetSpike rateMedial temporal lobe seizuresAntiepileptic drug changesRefractory epileptic patientsTemporal lobe seizuresOnset seizuresDrug changesEpileptic patientsNeocortical locationsClinical meaningMedial temporalSeizuresIntracranial electrodesDays of recordingAED mechanismsIntracranial recordingsSignificant increaseAEDsPrevious reportsOnsetSpecific effectsWithdrawal
2001
Distinguishing Subtypes of Temporal Lobe Epilepsy with Background Hippocampal Activity
Zaveri H, Duckrow R, De Lanerolle N, Spencer S. Distinguishing Subtypes of Temporal Lobe Epilepsy with Background Hippocampal Activity. Epilepsia 2001, 42: 725-730. PMID: 11422326, DOI: 10.1046/j.1528-1157.2001.00500.x.Peer-Reviewed Original ResearchConceptsMesial temporal sclerosisTemporal lobe epilepsyLobe epilepsySurgical outcomesIntractable temporal lobe epilepsyPoor surgical outcomesGood surgical outcomeMedial temporal structuresMedial temporal lobeDelta band powerTemporal sclerosisRetrospective studyHippocampal tissueBackground EEGSeizure onsetIndividual patientsSurgical proceduresIntracranial monitoringTemporal lobeGamma frequency bandClinical observationsPatientsAnterior hippocampusCell lossSubtypes
1992
Regional coherence and the transfer of ictal activity during seizure onset in the medial temporal lobe
Duckrow R, Spencer S. Regional coherence and the transfer of ictal activity during seizure onset in the medial temporal lobe. Clinical Neurophysiology 1992, 82: 415-422. PMID: 1375548, DOI: 10.1016/0013-4694(92)90046-k.Peer-Reviewed Original ResearchConceptsMedial temporal lobeSeizure onsetTemporal lobeBrain regionsSustained seizure activityHippocampal depth electrodesHuman medial temporal lobeConsecutive patientsResective surgerySeizure dischargesSeizure activityEpileptiform activityIctal activityPosterior hippocampusDepth electrodesNeuronal entrainmentTransient increaseIctal periodNeuronal synchronizationPossible resective surgeryEEG activityOnsetLobeAdjacent contactsSec epochs