2023
Cross-hemicord spinal fiber reorganization associates with cortical sensory and motor network expansion in the rat model of hemicontusion cervical spinal cord injury
Mihailovic J, Sanganahalli B, Hyder F, Chitturi J, Elkabes S, Heary R, Kannurpatti S. Cross-hemicord spinal fiber reorganization associates with cortical sensory and motor network expansion in the rat model of hemicontusion cervical spinal cord injury. Neuroscience Letters 2023, 820: 137607. PMID: 38141752, PMCID: PMC10797561, DOI: 10.1016/j.neulet.2023.137607.Peer-Reviewed Original ResearchConceptsSpinal cord injuryCervical spinal cord injuryDiffusion tensor imagingCord injurySpinal cordCervical spinal cordState functional connectivitySpinal cord samplesSpinal cord diffusion tensor imagingMagnetic resonance imagingBrain functional MRIInjury epicenterSpinal reorganizationPost-SCINeuroplastic changesCord samplesCortical sensoryRat modelTraumatic injuryMD changeMotor networkNervous systemResonance imagingSingle-subject levelFunctional MRI
2022
Thalamic activations in rat brain by fMRI during tactile (forepaw, whisker) and non-tactile (visual, olfactory) sensory stimulations
Sanganahalli BG, Thompson GJ, Parent M, Verhagen JV, Blumenfeld H, Herman P, Hyder F. Thalamic activations in rat brain by fMRI during tactile (forepaw, whisker) and non-tactile (visual, olfactory) sensory stimulations. PLOS ONE 2022, 17: e0267916. PMID: 35522646, PMCID: PMC9075615, DOI: 10.1371/journal.pone.0267916.Peer-Reviewed Original ResearchConceptsDorsal lateral geniculate nucleusVentral posterior medialVentral posterior lateralThalamic activationFunctional MRIPosterior medial thalamic nucleusMedial thalamic nucleiSensory stimuliLateral geniculate nucleusPost-mortem humanOlfactory stimuliHigh-field functional MRIField functional MRIWhisker stimuliDeep brain regionsRat thalamusThalamic nucleiGeniculate nucleusMediodorsal nucleusRat brainInferior colliculusThalamusDifferent sensory stimuliCortical activationCortical activity
2020
Orthonasal versus retronasal glomerular activity in rat olfactory bulb by fMRI
Sanganahalli BG, Baker KL, Thompson GJ, Herman P, Shepherd GM, Verhagen JV, Hyder F. Orthonasal versus retronasal glomerular activity in rat olfactory bulb by fMRI. NeuroImage 2020, 212: 116664. PMID: 32087375, PMCID: PMC9362851, DOI: 10.1016/j.neuroimage.2020.116664.Peer-Reviewed Original ResearchConceptsRat olfactory bulbOlfactory bulbWhole olfactory bulbOlfactory receptor neuronsFunctional MRINasal cavityRetronasal stimuliGlomerular sheetDorsal-medial regionsDelivery routeRetronasal stimulationSimilar response amplitudesGlomerular activityFMRI activation mapsSame odorReceptor neuronsDorsal regionNeural responsesOdor representationsLateral regionsSame odorantOrthonasalUnderlie differencesResponse amplitudeResponse patterns
2018
Alterations of Parenchymal Microstructure, Neuronal Connectivity, and Cerebrovascular Resistance at Adolescence after Mild-to-Moderate Traumatic Brain Injury in Early Development
Parent M, Li Y, Santhakumar V, Hyder F, Sanganahalli BG, Kannurpatti SS. Alterations of Parenchymal Microstructure, Neuronal Connectivity, and Cerebrovascular Resistance at Adolescence after Mild-to-Moderate Traumatic Brain Injury in Early Development. Journal Of Neurotrauma 2018, 36: 601-608. PMID: 29855211, PMCID: PMC6354598, DOI: 10.1089/neu.2018.5741.Peer-Reviewed Original ResearchConceptsTraumatic brain injuryDevelopmental traumatic brain injuryResting-state functional connectivityDiffusion tensor imagingCerebrovascular resistanceIpsilateral hippocampusBrain injuryLateral fluid percussion traumatic brain injuryFluid percussion traumatic brain injuryNeuronal connectivityFunctional MRIModerate traumatic brain injuryParenchymal microstructureInterhemispheric structural connectivityFluid percussion injuryCortical blood flowNeural connectivityMicrostructural integrityInterhemispheric asymmetryIpsilateral thalamusNeurovascular functionCerebrovascular reactivityMotor cortexRSFC strengthSubcortical alterations
2016
Chapter 5 New horizons in neurometabolic and neurovascular coupling from calibrated fMRI
Shu CY, Sanganahalli BG, Coman D, Herman P, Hyder F. Chapter 5 New horizons in neurometabolic and neurovascular coupling from calibrated fMRI. Progress In Brain Research 2016, 225: 99-122. PMID: 27130413, DOI: 10.1016/bs.pbr.2016.02.003.Peer-Reviewed Original ResearchConceptsNeurovascular couplingFunctional MRINeuronal activityBlood oxygenation level-dependent (BOLD) signalFunctional brain activationLevel-dependent signalNeurometabolic couplingEffective therapyBlood flowNeuroimaging toolsHealth conditionsPowerful neuroimaging toolBrain activationBOLD signalNeural activityBOLD contrastMetabolic demandsOxygen consumptionDependent signalsTherapyMicrovesselsMRIActivityBiomarkers
2013
Quantitative basis for neuroimaging of cortical laminae with calibrated functional MRI
Herman P, Sanganahalli BG, Blumenfeld H, Rothman DL, Hyder F. Quantitative basis for neuroimaging of cortical laminae with calibrated functional MRI. Proceedings Of The National Academy Of Sciences Of The United States Of America 2013, 110: 15115-15120. PMID: 23980158, PMCID: PMC3773779, DOI: 10.1073/pnas.1307154110.Peer-Reviewed Original ResearchConceptsCerebral blood volumeLocal field potentialsMultiunit activitySomatosensory cortexCortical laminaeBlood oxygenation level-dependent (BOLD) signalRat somatosensory cortexLevel-dependent signalNeurometabolic couplingCerebral cortexSuperficial laminaeCBF changesDeep laminaeMagnetic resonance imaging dataBlood flowQuantitative neuroimagingBlood volumeFunctional MRISensory stimulationBOLD signalOxidative metabolismCortexLayer-specific responsesMetabolic measurementsField potentials