2014
Tissue Specific Arterial Spin Labeling fMRI: A Superior Method for Imaging Cerebral Blood Flow in Aging and Disease
Qiu Y, Borogovac A, Laine A, Hirsch J, Asllani I. Tissue Specific Arterial Spin Labeling fMRI: A Superior Method for Imaging Cerebral Blood Flow in Aging and Disease. Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2014, 2014: 6687-6690. PMID: 25571530, DOI: 10.1109/embc.2014.6945162.Peer-Reviewed Original Research
2011
Effects of intensive glucose lowering on brain structure and function in people with type 2 diabetes (ACCORD MIND): a randomised open-label substudy
Launer LJ, Miller ME, Williamson JD, Lazar RM, Gerstein HC, Murray AM, Sullivan M, Horowitz KR, Ding J, Marcovina S, Lovato LC, Lovato J, Margolis KL, O'Connor P, Lipkin EW, Hirsch J, Coker L, Maldjian J, Sunshine JL, Truwit C, Davatzikos C, Bryan RN, investigators F. Effects of intensive glucose lowering on brain structure and function in people with type 2 diabetes (ACCORD MIND): a randomised open-label substudy. The Lancet Neurology 2011, 10: 969-977. PMID: 21958949, PMCID: PMC3333485, DOI: 10.1016/s1474-4422(11)70188-0.Peer-Reviewed Original ResearchConceptsTotal brain volumeType 2 diabetesIntensive treatment groupIntensive treatmentStandard treatmentGlycaemic controlDSST scoresTreatment groupsBrain volumeDigit Symbol Substitution Test scoreHigher glycated hemoglobinIntensive glycaemic controlOpen-label substudyStandard glycaemic controlStandard treatment groupUS National HeartMonth outcome measuresSubset of participantsSignificant treatment differencesACCORD studyCardiovascular eventsCardiovascular riskIntensive glucoseBrain atrophyIntensive therapy
2009
Reperfusion normalizes motor activation patterns in large‐vessel disease
Chmayssani M, Lazar RM, Hirsch J, Marshall RS. Reperfusion normalizes motor activation patterns in large‐vessel disease. Annals Of Neurology 2009, 65: 203-208. PMID: 19259970, PMCID: PMC2653600, DOI: 10.1002/ana.21554.Peer-Reviewed Original ResearchConceptsMotor activation patternsVasomotor reactivityActivation patternsInterest analysisIpsilateral motor activationLarge vessel diseaseNormal neurological functionHealthy control subjectsHigh-grade stenosisBlood oxygen level-dependent (BOLD) signalNormal blood flowDynamic functional reorganizationLevel-dependent signalFunctional magnetic resonanceRepeated-measures analysisHemodynamic failureHemodynamic impairmentRevascularization proceduresIpsilateral hemisphereNeurological functionControl subjectsClinical consequencesBlood flowFunctional reorganizationSpontaneous resolution
2007
Brain Activity Associated With Stimulation Therapy of the Visual Borderzone in Hemianopic Stroke Patients
Marshall RS, Ferrera JJ, Barnes A, Xian Zhang, O'Brien KA, Chmayssani M, Hirsch J, Lazar RM. Brain Activity Associated With Stimulation Therapy of the Visual Borderzone in Hemianopic Stroke Patients. Neurorehabilitation And Neural Repair 2007, 22: 136-144. PMID: 17698955, DOI: 10.1177/1545968307305522.Peer-Reviewed Original ResearchMeSH KeywordsAdaptation, PhysiologicalAdultAgedAttentionBrainBrain MappingCerebrovascular CirculationFemaleFunctional LateralityHemianopsiaHumansMagnetic Resonance ImagingMaleMiddle AgedNeuronal PlasticityPhotic StimulationPhysical Therapy ModalitiesStrokeTreatment OutcomeVisual PathwaysVisual PerceptionConceptsVisual restoration therapyRestoration therapyHemianopic patientsAnterior cingulateHemianopic stroke patientsHigher-order visual areasBilateral anterior cingulateBilateral basal gangliaHome-based treatment programDorsolateral frontal cortexBlood oxygen level-dependent activityBrain activityFunctional magnetic resonance imagingMagnetic resonance imagingBrain Activity AssociatedCondition interactionLevel-dependent activityStroke patientsBasal gangliaBrain injuryStimulation therapyFrontal cortexMiddle temporal regionsRepetitive stimulationVisual therapyQuantitative objective markers for upper and lower motor neuron dysfunction in ALS
Mitsumoto H, Ulu A, Pullman S, Gooch C, Chan S, Tang M, Mao X, Hays A, Floyd A, Battista V, Montes J, Hayes S, Dashnaw S, Kaufmann P, Gordon P, Hirsch J, Levin B, Rowland L, Shungu D. Quantitative objective markers for upper and lower motor neuron dysfunction in ALS. Neurology 2007, 68: 1402-1410. PMID: 17452585, DOI: 10.1212/01.wnl.0000260065.57832.87.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overAmyotrophic Lateral SclerosisAspartic AcidBiomarkersCreatineDiffusion Magnetic Resonance ImagingFemaleFollow-Up StudiesHumansMagnetic Resonance SpectroscopyMaleMiddle AgedMotor CortexMotor Neuron DiseaseMotor NeuronsMuscular Atrophy, SpinalNeural ConductionProspective StudiesTranscranial Magnetic StimulationConceptsMotor unit number estimationCentral motor conduction timeMotor conduction timeAcetyl-aspartate concentrationsUMN syndromeControl subjectsTibialis anteriorConduction timeObjective markersLower motor neuron dysfunctionLower motor neuron involvementALS Functional RatingMotor neuron involvementMotor neuron dysfunctionProton MR spectroscopic imagingTranscranial magnetic stimulationRatio of NAADiffusion tensor imagingLMN syndromesDisease activityNeuron involvementNeuron dysfunctionMR spectroscopic imagingFunctional ratingObjective biomarkers
2006
Hemodynamic Impairment as a Stimulus for Functional Brain Reorganization
Marshall RS, Krakauer JW, Matejovsky T, Zarahn E, Barnes A, Lazar RM, Hirsch J. Hemodynamic Impairment as a Stimulus for Functional Brain Reorganization. Cerebrovascular And Brain Metabolism Reviews 2006, 26: 1256-1262. PMID: 16421509, DOI: 10.1038/sj.jcbfm.9600274.Peer-Reviewed Original ResearchConceptsVasomotor reactivityHemodynamic impairmentMotor-related activityControl subjectsFunctional reorganizationMotor regionsLevel-dependent signal intensityAbnormal cerebral hemodynamicsTypical motor activitiesLarge vessel occlusionSubgroup of patientsBlood oxygen level-dependent (BOLD) signal intensityContralateral motor areasFunctional brain reorganizationCarbon dioxide inhalationSimple motor taskFunctional magnetic resonanceAbnormal vasoreactivityTranscranial DopplerBrain reorganizationVessel occlusionCerebral hemodynamicsHand contralateralMotor areaFocal lesions
2004
Hypoperfusion without stroke alters motor activation in the opposite hemisphere
Krakauer JW, Radoeva PD, Zarahn E, Wydra J, Lazar RM, Hirsch J, Marshall RS. Hypoperfusion without stroke alters motor activation in the opposite hemisphere. Annals Of Neurology 2004, 56: 796-802. PMID: 15562431, DOI: 10.1002/ana.20286.Peer-Reviewed Original ResearchConceptsIpsilateral activationMiddle cerebral artery diseaseCerebral artery diseaseLarge vessel diseaseAge-matched controlsMotor-related areasNormal motor performanceFunctional magnetic resonanceHemodynamic compromiseVasomotor reactivityArtery diseaseHemispheric hypoperfusionCortical reorganizationInternal carotidHand contralateralPatientsMotor activationMotor tasksMotor performanceHypoperfusionHemispheric activationUnique activationDiseaseActivationMagnetic resonance
2000
An Integrated Functional Magnetic Resonance Imaging Procedure for Preoperative Mapping of Cortical Areas Associated with Tactile, Motor, Language, and Visual Functions
Hirsch J, Ruge M, Kim K, Correa D, Victor J, Relkin N, Labar D, Krol G, Bilsky M, Souweidane M, DeAngelis L, Gutin P. An Integrated Functional Magnetic Resonance Imaging Procedure for Preoperative Mapping of Cortical Areas Associated with Tactile, Motor, Language, and Visual Functions. Neurosurgery 2000, 47: 711. PMID: 10981759, DOI: 10.1097/00006123-200009000-00037.Peer-Reviewed Original ResearchConceptsIntraoperative electrophysiological measurementsVisual field examinationVisual functionHealthy volunteersCentral sulcusVisual cortexFMRI mapsWernicke's areaFunctional magnetic resonance imaging (fMRI) taskDirect cortical stimulationFunctional magnetic resonance imaging (fMRI) procedureBroca's areaField examinationElectrophysiological measurementsSurgical patientsSurgical riskCortical stimulationPreoperative mappingSurgical routeWada testCortical areasElectrophysiological proceduresMagnetic resonance imaging (MRI) proceduresMultiple critical functionsPreoperative map
1999
Concordance between Functional Magnetic Resonance Imaging and Intraoperative Language Mapping
Ruge M, Victor J, Hosain S, Correa D, Relkin N, Tabar V, Brennan C, Gutin P, Hirsch J. Concordance between Functional Magnetic Resonance Imaging and Intraoperative Language Mapping. Stereotactic And Functional Neurosurgery 1999, 72: 95-102. PMID: 10853058, DOI: 10.1159/000029706.Peer-Reviewed Original ResearchConceptsDirect cortical stimulationIntraoperative electrophysiologyCortical stimulationSensorimotor cortexIntraoperative language mappingFunctional magnetic resonance imagingMagnetic resonance imagingSSEP recordingsLocalization of functionMotor cortexIntraoperative localizationPreoperative toolResonance imagingLanguage mappingCortexWernicke's areaElectrophysiologyFMRIPresent studyStimulationSensorimotor mappingConcordancePatientsBroca
1991
Assessment of potential contrast sensitivity Part 1: Preoperative prediction of contrast sensitivity following intraocular lens implantation
Morris M, Klett Z, Gieser S, Couch J, Hirsch J. Assessment of potential contrast sensitivity Part 1: Preoperative prediction of contrast sensitivity following intraocular lens implantation. Journal Of Cataract & Refractive Surgery 1991, 17: 37-44. PMID: 2005557, DOI: 10.1016/s0886-3350(13)80982-0.Peer-Reviewed Original ResearchConceptsPostoperative contrast sensitivity functionPreoperative visual acuityContrast sensitivity functionPreoperative visual acuity of 20/200Contrast sensitivityMild to moderate cataractsVisual acuity of 20/200Postoperative contrast sensitivityAcuity of 20/200Intraocular lens implantationModerate cataractLens implantationVisual acuityCataract patientsLens opacitiesPostoperative complicationsPreoperative measurementsPreoperative predictionCataractPatientsEyesAcuityComplicationsAssessment of contrast sensitivity Part II: The relationship between objective lens opacity and laser interferometric contrast sensitivity in the cataract patient
Klett Z, Morris M, Gieser S, Couch J, Hirsch J. Assessment of contrast sensitivity Part II: The relationship between objective lens opacity and laser interferometric contrast sensitivity in the cataract patient. Journal Of Cataract & Refractive Surgery 1991, 17: 45-57. PMID: 2005558, DOI: 10.1016/s0886-3350(13)80983-2.Peer-Reviewed Original ResearchConceptsLens opacitiesContrast sensitivityRetinal functionLaser interferometric measurementMeasure retinal functionPreoperative lens opacitiesRetinal contrast sensitivityOpacity lensmeterCataract densityCataract populationCataract patientsCataract typeImmature cataractCataractPatientsInverse linear relationshipOpacitySensitivityLensmeterCorrelation coefficient
1990
Assessment of Visual-Field Changes before and after Focal Photocoagulation for Clinically Significant Diabetic Macular Edema
Sims L, Stoessel K, Thompson J, Hirsch J. Assessment of Visual-Field Changes before and after Focal Photocoagulation for Clinically Significant Diabetic Macular Edema. Ophthalmologica 1990, 200: 133-141. PMID: 2345627, DOI: 10.1159/000310094.Peer-Reviewed Original Research
1988
Evaluation of Corrected Loss Variance as a Visual Field Index
Liao P, Gollamudi S, Hirsch J. Evaluation of Corrected Loss Variance as a Visual Field Index. Ophthalmologica 1988, 197: 136-143. PMID: 3231420, DOI: 10.1159/000309934.Peer-Reviewed Original ResearchConceptsCorrected loss varianceVisual field indicesLoss varianceField indicesClinical diagnosis of glaucomaDiagnosed glaucoma patientsGlaucoma suspect groupGlaucoma-suspect patientsOctopus visual fieldDiagnosis of glaucomaGroup of patientsVisual fieldGlaucoma groupGlaucoma patientsField lossStudy groupPatientsClinical diagnosisControl groupGlaucomaGroup