2025
Image Quality Improvement in MRI of Cochlear Implants and Auditory Brainstem Implants After Metal Artifact Reduction Techniques
Winchester A, Cottrell J, Kay-Rivest E, Friedmann D, McMenomey S, Roland J, Bruno M, Hagiwara M, Moonis G, Jethanamest D. Image Quality Improvement in MRI of Cochlear Implants and Auditory Brainstem Implants After Metal Artifact Reduction Techniques. Otology & Neurotology 2025, 46: 641-647. PMID: 40307987, DOI: 10.1097/mao.0000000000004517.Peer-Reviewed Original ResearchAuditory brainstem implantCochlear implantationBrainstem implantInternal auditory canalFour-point Likert scaleMagnetic resonance imagingMode scoresFluid-attenuated inversion recoveryIpsilateral semicircular canalsUnilateral CIAuditory implantsContralateral inner earMetal artifact reductionQuality improvementVisualization of intracranial structuresTwo-tailed t-testLikert scalePaired two-tailed t-testAuditory canalAverage scoreOccipital lobeInner earSemicircular canalsT-testIpsilateral occipital lobeCerebral perfusion differences in the visual cortex and fusiform subregions across the psychosis spectrum
Sritharan J, Zeng V, Petr J, Mutsaerts H, Hoang D, Bolo N, Ivleva E, Dai W, Gershon E, Keedy S, Parker D, Trotti R, McDowell J, Clementz B, Tamminga C, Pearlson G, Keshavan M, Lizano P. Cerebral perfusion differences in the visual cortex and fusiform subregions across the psychosis spectrum. Frontiers In Psychiatry 2025, 16: 1566184. PMID: 40365009, PMCID: PMC12069394, DOI: 10.3389/fpsyt.2025.1566184.Peer-Reviewed Original ResearchPsychosis spectrum disordersFusiform gyrusSchizoaffective disorderPseudo-continuous arterial spin-labeling scansCerebral blood flowOccipital lobeOverall cognitive performanceArterial spin labeling scansGray matter cerebral blood flowPsychosis spectrumBipolar disorderCognitive measuresCognitive performancePsychosisSpectrum disorderDiagnostic groupsPerfusion differencesVisual processingCognitive impairmentVisual hallucinationsCytoarchitectonic subregionsPerfusion alterationsLabeling scansSchizophreniaHealthy controls
2024
Non-dominant, Lesional Parieto-occipital Lobe Epilepsy
Herlopian A. Non-dominant, Lesional Parieto-occipital Lobe Epilepsy. 2024, 221-240. DOI: 10.1007/978-3-031-23828-4_11.Peer-Reviewed Original ResearchFocal cortical dysplasiaCortical dysplasiaSupratentorial cystic lesionsPost-operative outcomesInterictal epileptiform activityPredictors of outcomeAnti-seizure medicationsMechanisms of epileptogenesisVisual evoked potentialsNeocortical epilepsy surgeryResection surgeryCystic lesionsSurgical interventionEpileptiform activityDifferential diagnosisEvoked PotentialsPharmacoresistant epilepsyPatient populationNeuroimaging characteristicsEpilepsy surgeryDysplasiaPatientsOccipital lobeSensorimotor cortexSurgeryRasmussen’s Encephalitis and Focal Cortical Dysplasia
Vadiparati A, Herlopian A. Rasmussen’s Encephalitis and Focal Cortical Dysplasia. 2024, 241-286. DOI: 10.1007/978-3-031-23828-4_12.Peer-Reviewed Original ResearchOccipital lobe epilepsyRasmussen encephalitisSurgical interventionLobe epilepsyVisual field analysisSurgical decision-making processFocal cortical dysplasiaLeft occipital lobeAnterior thalamic nucleiClinical presentationCortical dysplasiaMultifocal epilepsySurgical techniqueIntractable seizuresOutcome predictorsDeep brain stimulationThalamic nucleiNeuromodulation therapiesDiagnostic criteriaOccipital lobeOccipital lobectomyProgressive natureEpilepsyBrain stimulationPatients
2023
Lobe‐specific changes in white matter volume and myelination following 6‐month 40 Hz gamma sensory stimulation in patients on the Alzheimer’s disease spectrum
Cimenser A, Da X, Hempel E, Malchano Z, Vaughan B, Megerian J, Hajos M. Lobe‐specific changes in white matter volume and myelination following 6‐month 40 Hz gamma sensory stimulation in patients on the Alzheimer’s disease spectrum. Alzheimer's & Dementia 2023, 19 DOI: 10.1002/alz.073143.Peer-Reviewed Original ResearchWhite matter volumeAlzheimer's diseaseWhite matterPlacebo groupTemporal lobeMatter volumeFrontal lobeParietal lobeWhite matter atrophyGray matter changesMRI T1 imagesTreatment group resultsMonth 3Month 6Neurological comorbiditiesT1w/T2w ratioMatter atrophyAD patientsMagnetic resonance imaging dataPathological changesOccipital lobePlacebo participantsMatter changesNeuronal activityTreatment groupsTopology of the lateral visual system: The fundus of the superior temporal sulcus and parietal area H connect nonvisual cerebrum to the lateral occipital lobe
Dadario N, Tanglay O, Stafford J, Davis E, Young I, Fonseka R, Briggs R, Yeung J, Teo C, Sughrue M. Topology of the lateral visual system: The fundus of the superior temporal sulcus and parietal area H connect nonvisual cerebrum to the lateral occipital lobe. Brain And Behavior 2023, 13: e2945. PMID: 36912573, PMCID: PMC10097165, DOI: 10.1002/brb3.2945.Peer-Reviewed Original ResearchConceptsActivation likelihood estimationHub-like regionsLateral occipital lobeOccipital lobeVisual networkSuperior temporal sulcusTask-based functional MRI studiesTemporal sulcusTemporo-occipital regionsFunctional MRI studyCortical parcellation schemeMeta-analytic softwareClinical significanceFunctional roleLanguage cortexMRI studiesAbnormal activationCortical regionsVisual systemFunctional coactivationCerebrumCortexPossible important roleParcellation schemesStructural connectivity
2022
Predictive brain signals mediate association between shared reading and expressive vocabulary in infants
Wang S, Tzeng O, Aslin R. Predictive brain signals mediate association between shared reading and expressive vocabulary in infants. PLOS ONE 2022, 17: e0272438. PMID: 35921370, PMCID: PMC9348734, DOI: 10.1371/journal.pone.0272438.Peer-Reviewed Original ResearchConceptsExpressive vocabularyShared reading experiencesReading experienceBrain signalsExpressive vocabulary acquisitionEfficient language processingFurther mediation analysisUnique varianceUpcoming informationVocabulary acquisitionLanguage learningMediation analysisInfant brainLanguage processingVocabularyPredictive signalsMaternal educationOccipital lobeExperiencePresent studyTaskFirst evidenceLearningReadingProcessing
2021
Comparative anatomy of dissected optic lobes, optic ventricles, midbrain tectum, collicular ventricles, and aqueduct: evolutionary modifications as potential explanation for non-tumoral aqueductal anomalies in humans
Kier E, Kalra V, Conlogue G, Filippi C, Saluja S. Comparative anatomy of dissected optic lobes, optic ventricles, midbrain tectum, collicular ventricles, and aqueduct: evolutionary modifications as potential explanation for non-tumoral aqueductal anomalies in humans. Child's Nervous System 2021, 38: 287-294. PMID: 34812897, PMCID: PMC8789712, DOI: 10.1007/s00381-021-05408-0.Peer-Reviewed Original ResearchConceptsEvolutionary modificationsVertebrate materialMammalian componentsTectum structuresAdult sharksNeocortical expansionVertebratesComparative anatomyOptic lobeRelative size changesContinuous cavityOptic ventricleMammalsSharksSize changesFrogsIguanasOccipital lobeModificationMidbrain tectumMidbrain tectum structuresTectumPotential explanationAqueductal stenosisCerebral ventricleComparison of short-channel separation and spatial domain filtering for removal of non-neural components in functional near-infrared spectroscopy signals
Noah JA, Zhang X, Dravida S, DiCocco C, Suzuki T, Aslin RN, Tachtsidis I, Hirsch J. Comparison of short-channel separation and spatial domain filtering for removal of non-neural components in functional near-infrared spectroscopy signals. Neurophotonics 2021, 8: 015004-015004. PMID: 33598505, PMCID: PMC7881368, DOI: 10.1117/1.nph.8.1.015004.Peer-Reviewed Original Research
2020
Neurological Functional Connectivity in Unilateral Coronal Synostosis: A Side-Based Comparison
Park KE, Singh A, Lacadie C, Allam O, Smetona J, Alperovich M, Persing JA. Neurological Functional Connectivity in Unilateral Coronal Synostosis: A Side-Based Comparison. Journal Of Craniofacial Surgery 2020, 32: 910-914. PMID: 33252527, DOI: 10.1097/scs.0000000000007274.Peer-Reviewed Original ResearchConceptsUCS patientsUnicoronal synostosisMotor coordinationFunctional connectivitySeed connectivity analysesLong-term sequelaeState functional MRIIntrinsic connectivity distributionComplex motor movementsVisuo-spatial functionUnilateral coronal synostosisVisuo-motor coordinationHealthy controlsMotor functionVisual functionVisual information processingOccipital lobeNeurocognitive impairmentTemporal cortexPatientsParietal lobeIntrinsic connectivityFunctional MRIBrodmann areasSeed connectivity
2019
Remote photonic sensing of cerebral hemodynamic changes via temporal spatial analysis of acoustic vibrations
Ozana N, Noah JA, Zhang X, Ono Y, Hirsch J, Zalevsky Z. Remote photonic sensing of cerebral hemodynamic changes via temporal spatial analysis of acoustic vibrations. Journal Of Biophotonics 2019, 13: e201900201. PMID: 31415118, DOI: 10.1002/jbio.201900201.Peer-Reviewed Original ResearchConceptsHemodynamic changesCerebral hemodynamic changesNeural activityTask-specific neural activityVisual checkerboard stimulationHuman brain activationHemodynamic responseOccipital lobeBlood flowTissue oxygenationCheckerboard stimulationRest epochsBrain activationHemodynamic response functionHuman brainBrainRemote sensingNovel photonic methodPhysiological processesAcoustic vibrationsTemporal vibrationsTemporal-spatial analysisPhotonic sensingCortical Excitability Dynamics During Fear Processing
Chirumamilla V, Gonzalez-Escamilla G, Koirala N, Bonertz T, von Grotthus S, Muthuraman M, Groppa S. Cortical Excitability Dynamics During Fear Processing. Frontiers In Neuroscience 2019, 13: 568. PMID: 31275095, PMCID: PMC6593288, DOI: 10.3389/fnins.2019.00568.Peer-Reviewed Original ResearchFrontal theta powerFear processingTranscranial magnetic stimulationTheta powerVisual cuesWeighted phase lag indexAlpha powerPrefrontal cortexRight dorsomedial prefrontal cortexCortical excitabilityCortical excitability dynamicsAversive unconditioned stimulusInstructed fear paradigmDorsomedial prefrontal cortexFrontal lobeVisual cue onsetStress coping behaviorTheta power changesStructural MRI scanningAlpha frequency bandCue onsetCoping behaviorsFear paradigmOccipital lobeUnconditioned stimulus
2018
Glycemic Variability and Brain Glucose Levels in T1DM
Hwang JJ, Jiang L, Sanchez Rangel E, Fan X, Ding Y, Lam W, Leventhal J, Dai F, Rothman DL, Mason GF, Sherwin RS. Glycemic Variability and Brain Glucose Levels in T1DM. Diabetes 2018, 68: db180722. PMID: 30327383, PMCID: PMC6302539, DOI: 10.2337/db18-0722.Peer-Reviewed Original ResearchConceptsBrain glucose levelsGlycemic variabilityGlucose levelsHyperglycemic clampType 1 diabetes mellitusPlasma glucose levelsBrain glucose transportHealthy control participantsDiabetes mellitusBrain glucoseControl ratsContinuous glucose monitorGlucose clampRat modelOccipital lobeMRS scanningT1DMGlucose kineticsControl participantsGlucose transport kineticsGlucose monitorSimilar changesRatsClampGlucose transportResting-state Brain Activity Changes Associated with Tardive Dyskinesia in Patients with Schizophrenia: Fractional Amplitude of Low-frequency Fluctuation Decreased in the Occipital Lobe
Zhang P, Li Y, Fan F, Li CR, Luo X, Yang F, Yao Y, Tan Y. Resting-state Brain Activity Changes Associated with Tardive Dyskinesia in Patients with Schizophrenia: Fractional Amplitude of Low-frequency Fluctuation Decreased in the Occipital Lobe. Neuroscience 2018, 385: 237-245. PMID: 29909076, DOI: 10.1016/j.neuroscience.2018.06.014.Peer-Reviewed Original ResearchConceptsAbnormal Involuntary Movement ScaleMiddle occipital gyrusRight calcarine sulcusTardive dyskinesiaBrain activity changesClinical parametersLeft middle occipital gyrusSchizophrenic patientsCalcarine sulcusOccipital lobeSeverity of TDAIMS total scoreDecreased brain activityFractional amplitudeResting-state functional magnetic resonance imaging (fMRI) dataResting-state brain activityLow-frequency fluctuationsNegative Syndrome ScaleBrain activityActivity changesConstructional scoresTD groupTD patientsHealthy controlsMagnetic resonance imaging data
2017
Effects of the brain-derived neurotropic factor variant Val66Met on cortical structure in late childhood and early adolescence
de Araujo C, Zugman A, Swardfager W, Belangero S, Ota V, Spindola L, Hakonarson H, Pellegrino R, Gadelha A, Salum G, Pan P, de Moura L, Del Aquilla M, Picon F, Amaro E, Sato J, Brietzke E, Grassi-Oliveira R, Rohde L, Miguel E, Bressan R, Jackowski A. Effects of the brain-derived neurotropic factor variant Val66Met on cortical structure in late childhood and early adolescence. Journal Of Psychiatric Research 2017, 98: 51-58. PMID: 29288952, DOI: 10.1016/j.jpsychires.2017.12.008.Peer-Reviewed Original ResearchConceptsPsychiatric disordersVal66Met polymorphismCortical thicknessBrain-derived neurotrophic factor (BDNF) Val66Met polymorphismRegional structural brain changesNeurotrophic factor Val66Met polymorphismPrefrontal cortexStructural brain changesLateral temporal cortexEffect of Val66MetBilateral prefrontal cortexVal66Met effectsWindow of vulnerabilityCortical maturationBrain changesOccipital lobeMet carriersAtypical neurodevelopmentMRI scansPsychiatric diagnosisTemporal cortexDiagnosis interactionVal66MetNeuropsychiatric disordersBrain morphologyBlunted rise in brain glucose levels during hyperglycemia in adults with obesity and T2DM
Hwang JJ, Jiang L, Hamza M, Rangel E, Dai F, Belfort-DeAguiar R, Parikh L, Koo BB, Rothman DL, Mason G, Sherwin RS. Blunted rise in brain glucose levels during hyperglycemia in adults with obesity and T2DM. JCI Insight 2017, 2: e95913. PMID: 29046482, PMCID: PMC5846903, DOI: 10.1172/jci.insight.95913.Peer-Reviewed Original ResearchConceptsGlucose levelsPlasma free fatty acid levelsSimilar plasma glucose levelsFree fatty acid levelsCerebral glucose metabolismPlasma glucose levelsBrain glucose levelsFatty acid levelsAltered feeding behaviorGlucose incrementHyperglycemic clampBrain glucoseCerebral functionLean participantsOccipital lobeRodent modelsGlucose metabolismObesityT2DMGlucose responseHyperglycemiaNeurocognitive consequencesSimilar findingsAcid levelsIntracerebral glucose
2016
Drug‐resistant epilepsy in adults: Outcome trajectories after failure of two medications
Choi H, Hayat MJ, Zhang R, Hirsch LJ, Bazil CW, Mendiratta A, Kato K, Javed A, Legge AW, Buchsbaum R, Resor S, Heiman GA. Drug‐resistant epilepsy in adults: Outcome trajectories after failure of two medications. Epilepsia 2016, 57: 1152-1160. PMID: 27265407, DOI: 10.1111/epi.13406.Peer-Reviewed Original ResearchConceptsDrug-resistant epilepsySeizure freedomAntiepileptic drugsAdult patientsEpilepsy typeFocal epilepsyContinuous seizure freedomThird antiepileptic drugTertiary epilepsy centerSeizure-free periodMultiple ordinal logistic regression modelsLogistic regression modelsOrdinal logistic regression modelsClinical factorsIndependent predictorsEpilepsy centersMedical managementFluctuating courseOccipital lobeTemporal lobeEligibility criteriaPatientsEpilepsyTrajectory outcomesOutcome trajectories
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 durationResting GABA and glutamate concentrations do not predict visual gamma frequency or amplitude
Cousijn H, Haegens S, Wallis G, Near J, Stokes M, Harrison P, Nobre A. Resting GABA and glutamate concentrations do not predict visual gamma frequency or amplitude. Proceedings Of The National Academy Of Sciences Of The United States Of America 2014, 111: 9301-9306. PMID: 24927588, PMCID: PMC4078853, DOI: 10.1073/pnas.1321072111.Peer-Reviewed Original ResearchConceptsGamma peak frequencyHealthy volunteersGamma oscillationsVisual gamma activityBeamformer spatial filtering techniquesPeak frequencyCortical gamma oscillationsMagnetic resonance spectroscopyExcitatory pyramidal cellsGamma activityGamma-band oscillationsMagnetic resonance spectroscopy voxelGABAergic interneuronsMagnetic resonance spectroscopy measurementsGaussian fittingPyramidal cellsMagnetic resonance spectroscopy dataGABA levelsGamma frequenciesGABA concentrationsMeasurement of GABAGABAGlutamate concentrationOscillationsOccipital lobe
2008
CT Angiography-Source Image Hypoattenuation Predicts Clinical Outcome in Posterior Circulation Strokes Treated With Intra-Arterial Therapy
Schaefer P, Yoo A, Bell D, Barak E, Romero J, Nogueira R, Lev M, Schwamm L, Gonzalez R, Hirsch J. CT Angiography-Source Image Hypoattenuation Predicts Clinical Outcome in Posterior Circulation Strokes Treated With Intra-Arterial Therapy. Stroke 2008, 39: 3107-3109. PMID: 18703807, DOI: 10.1161/strokeaha.108.517680.Peer-Reviewed Original ResearchConceptsIntra-arterial thrombolysisVertebrobasilar occlusionClinical outcomesParenchymal hypoattenuationRankin scorePosterior circulation strokeHealth Stroke ScaleIntra-arterial therapyOnly independent predictorIndependent outcome predictorsMedial temporal lobeInferior parietal lobeStroke ScaleClot locationPatient ageCTA-SIIndependent predictorsOutcome predictorsOccipital lobeHypoattenuationTemporal lobeThrombolysisParietal lobePatientsMidbrain
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