2016
Metabolic demands of neural-hemodynamic associated and disassociated areas in brain
Sanganahalli BG, Herman P, Rothman DL, Blumenfeld H, Hyder F. Metabolic demands of neural-hemodynamic associated and disassociated areas in brain. Cerebrovascular And Brain Metabolism Reviews 2016, 36: 1695-1707. PMID: 27562867, PMCID: PMC5076793, DOI: 10.1177/0271678x16664531.Peer-Reviewed Original ResearchConceptsVentral posterolateral thalamic nucleusFunctional magnetic resonance imagingMulti-unit activityLocal field potentialsMetabolic demandsPosterolateral thalamic nucleusBlood oxygenation level-dependent (BOLD) responseSensory-evoked responsesCortical local field potentialsThalamic local field potentialsMagnetic resonance imagingLevel-dependent responsesSimilar metabolic demandThalamic nucleiForelimb cortexBlood flowBlood volumeCBV responseResonance imagingLatency differenceHemodynamicsBOLD signalOxidative metabolismDifferent metabolic demandsField potentials
2014
Insights from Neuroenergetics into the Interpretation of Functional Neuroimaging: An Alternative Empirical Model for Studying the Brain's Support of Behavior
Shulman RG, Hyder F, Rothman DL. Insights from Neuroenergetics into the Interpretation of Functional Neuroimaging: An Alternative Empirical Model for Studying the Brain's Support of Behavior. Cerebrovascular And Brain Metabolism Reviews 2014, 34: 1721-1735. PMID: 25160670, PMCID: PMC4269754, DOI: 10.1038/jcbfm.2014.145.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imagingMagnetic resonance imagingNeuronal activityMental moduleObservable behaviorBrain activityDistinct psychological mechanismsResonance imagingBaseline neuronal activityPositron emission tomography (PET) imagingEmission Tomography ImagingPsychological mechanismsMental processesFunctional neuroimagingBrain supportAwake humansAlternative empirical modelsNeurophysiological parametersBaseline activityTomography imagingTheoretical assumptionsSensory systemsIncremental signalNeuroimagingElectrical recordings
2013
Increased resting functional connectivity in spike‐wave epilepsy in WAG/Rij rats
Mishra AM, Bai X, Motelow JE, DeSalvo MN, Danielson N, Sanganahalli BG, Hyder F, Blumenfeld H. Increased resting functional connectivity in spike‐wave epilepsy in WAG/Rij rats. Epilepsia 2013, 54: 1214-1222. PMID: 23815571, PMCID: PMC3703864, DOI: 10.1111/epi.12227.Peer-Reviewed Original ResearchConceptsSpike-wave dischargesWAG/RijFunctional connectivityNonepileptic controlsAbsence epilepsyEpileptic WAG/RijBrain networksWAG/Rij ratsChronic seizure activitySpike-wave epilepsyHuman absence seizuresChildhood absence epilepsyWistar Albino GlaxoActivity-dependent plasticityCortical-cortical connectivityFunctional magnetic resonance imagingMagnetic resonance imagingNonepileptic animalsSeizure activitySpontaneous episodesWistar controlsAbsence seizuresAdjacent cortexChronic changesAnimal modelsFunctional MRI and neural responses in a rat model of Alzheimer's disease
Sanganahalli BG, Herman P, Behar KL, Blumenfeld H, Rothman DL, Hyder F. Functional MRI and neural responses in a rat model of Alzheimer's disease. NeuroImage 2013, 79: 404-411. PMID: 23648961, PMCID: PMC3700380, DOI: 10.1016/j.neuroimage.2013.04.099.Peer-Reviewed Original ResearchConceptsAlzheimer's diseaseFunctional magnetic resonance imagingCerebral cortexAD brainSomatosensory cortexRat modelCortical functionNeural responsesAge-matched healthy controlsAD rat modelContralateral somatosensory cortexSensory-evoked responsesHigh-field functional magnetic resonance imagingBrain functional responsesMagnetic resonance imagingAD ratsControl ratsHealthy controlsThalamic responsesNormal ratsCortical responsesAD modelSubcortical functionBrain plaquesElectrical stimulationGlutamatergic Function in the Resting Awake Human Brain is Supported by Uniformly High Oxidative Energy
Hyder F, Fulbright RK, Shulman RG, Rothman DL. Glutamatergic Function in the Resting Awake Human Brain is Supported by Uniformly High Oxidative Energy. Cerebrovascular And Brain Metabolism Reviews 2013, 33: 339-347. PMID: 23299240, PMCID: PMC3587823, DOI: 10.1038/jcbfm.2012.207.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imagingMagnetic resonance spectroscopy studyAwake resting stateFuture clinical investigationsMagnetic resonance imagingHigh resting activityAwake human brainGray matter regionsGlutamatergic functionGlutamatergic signalingMetabolic measuresClinical investigationAwake stateResting activityVisual cortexGlucose utilizationResonance imaging
2012
Quantitative fMRI and oxidative neuroenergetics
Hyder F, Rothman DL. Quantitative fMRI and oxidative neuroenergetics. NeuroImage 2012, 62: 985-994. PMID: 22542993, PMCID: PMC3389300, DOI: 10.1016/j.neuroimage.2012.04.027.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imagingNeuronal activityQuantitative functional magnetic resonance imagingTotal neuronal activityBlood oxygenation level-dependent (BOLD) signalBrain energy metabolismResting-state paradigmLevel-dependent signalMagnetic resonance imagingSynaptic activityResonance imagingParamagnetic contrast agentFunctional brainBOLD contrastBaseline stateEnergy metabolismFunctional mapsContrast agentsMagnetic resonance spectroscopyFMRI dataRegion of interestActivityNeuroenergeticsBrainAnalysis of Time and Space Invariance of BOLD Responses in the Rat Visual System
Bailey CJ, Sanganahalli BG, Herman P, Blumenfeld H, Gjedde A, Hyder F. Analysis of Time and Space Invariance of BOLD Responses in the Rat Visual System. Cerebral Cortex 2012, 23: 210-222. PMID: 22298731, PMCID: PMC3513959, DOI: 10.1093/cercor/bhs008.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imagingGeneral linear modelingSuperior colliculusBOLD responseBasal blood flowNeural activityRat visual systemBlood oxygenation level-dependent (BOLD) responsePrimary visual cortexMagnetic resonance imagingLevel-dependent responsesNeurovascular couplingRat brainBlood flowVisual cortexResonance imagingStimulation paradigmV1 signalsLight flashesOnset/Neural signalsResponseV1Visual systemColliculus
2005
Disturbed Coupling of rCBF, BOLD and CMRO2 in the Presence of Stimuli During Anesthesia As Revealed by Simultaneous BOLD and CBF Functional Magnetic Resonance Imaging
Qiu M, Ramani R, Shulman R, Hyder F, Rajeevan N, Constable R. Disturbed Coupling of rCBF, BOLD and CMRO2 in the Presence of Stimuli During Anesthesia As Revealed by Simultaneous BOLD and CBF Functional Magnetic Resonance Imaging. Journal Of Neurosurgical Anesthesiology 2005, 17: 224-225. DOI: 10.1097/01.ana.0000187715.47773.67.Peer-Reviewed Original ResearchFunctional magnetic resonance imagingMagnetic resonance imagingDisturbed couplingSimultaneous BOLDResonance imagingPresence of stimuliCMRO2AnesthesiaRCBFBOLD
2002
Quantitative fMRI of rat brain by multi-modal MRI and MRS measurements
Hyder F, Kida I, Smith A, Blumenfeld H, Shulman R, Rothman D. Quantitative fMRI of rat brain by multi-modal MRI and MRS measurements. International Congress Series 2002, 1235: 57-71. DOI: 10.1016/s0531-5131(02)00173-5.Peer-Reviewed Original ResearchMagnetic resonance imagingRat brainNeuronal activityFunctional MRIBOLD fMRI signalCerebral cortexNeuronal glucose oxidationRat cerebral cortexFunctional magnetic resonance imagingFMRI signalsBOLD functional MRIQuantitative magnetic resonance imagingBlood oxygenation levelBOLD fMRI studiesMulti-modal magnetic resonance imagingQuantitative functional MRIGlutamatergic neuronsOxygen deliveryPhysiologic basisResonance imagingPhysiologic componentsCMRO2BrainBlood circulationOxygenation level
2001
Quantitative functional imaging of the brain: towards mapping neuronal activity by BOLD fMRI
Hyder F, Kida I, Behar K, Kennan R, Maciejewski P, Rothman D. Quantitative functional imaging of the brain: towards mapping neuronal activity by BOLD fMRI. NMR In Biomedicine 2001, 14: 413-431. PMID: 11746934, DOI: 10.1002/nbm.733.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingNeuronal activityBOLD functional MRIFunctional MRICerebral cortexPharmacological treatmentGlutamate release inhibitorNeuronal glucose oxidationRat cerebral cortexRelease of glutamateRat forepaw stimulation modelFMRI signalsFunctional magnetic resonance imagingQuantitative magnetic resonance imagingBlood oxygenation levelBOLD fMRI studiesEnergy metabolismBOLD fMRI signalMulti-modal magnetic resonance imagingGlutamatergic neuronsRelease inhibitorChannel blockersRat brainOxygen deliveryNeurochemical basis