Basavaraju Sanganahalli, PhD
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About
Titles
Research Scientist in Radiology and Biomedical Imaging
Biography
My expertise in combining neurophysiology with fMRI brings a novel combination of tools and a unique perspective to understand brain function during physiology and pathology. My current research is focused on understanding of the biophysics of brain functioning and facilitating the translation of basic science research to various clinical applications (e.g., healthy aging, Alzheimer’s disease, epilepsy, early life stress, schizophrenia, stroke, mild traumatic brain injury, Spinal cord injury).
Appointments
Radiology & Biomedical Imaging
Research ScientistPrimary
Other Departments & Organizations
Education & Training
- PhD
- National Institute of Mental Health and Neuroscience, Neuroscience (2004)
- MPhil
- National Institute of Mental health and Neurosciences, Biophysics (1997)
- MS
- Bangalore University, Physics (1995)
- BS
- Bangalore University, Electronics (1993)
Research
Publications
2021
Supraspinal Sensorimotor and Pain-Related Reorganization after a Hemicontusion Rat Cervical Spinal Cord Injury
Sanganahalli BG, Chitturi J, Herman P, Elkabes S, Heary R, Hyder F, Kannurpatti SS. Supraspinal Sensorimotor and Pain-Related Reorganization after a Hemicontusion Rat Cervical Spinal Cord Injury. Journal Of Neurotrauma 2021, 38: 3393-3405. PMID: 34714150, PMCID: PMC8713267, DOI: 10.1089/neu.2021.0190.Peer-Reviewed Original ResearchConceptsSpinal cord injuryCervical spinal cord injuryAnterior cingulate cortexFunctional magnetic resonance imagingPre-frontal cortexNociceptive regionsCord injuryPresence of painSecondary somatosensory cortexFunctional connectivity densityElectrical forepaw stimulationFemale adult ratsTranslational animal modelsMost cortical regionsMagnetic resonance imagingDiscernable lesionsIpsilesional forelimbKdyn forceRSFC decreasesRsFC increasesSupraspinal changesMotor recoveryThermal hyperalgesiaT2 lesionsPain behavior
2020
Association Between Magnetic Resonance Imaging-Based Spinal Morphometry and Sensorimotor Behavior in a Hemicontusion Model of Incomplete Cervical Spinal Cord Injury in Rats
Chitturi J, Sanganahalli BG, Herman P, Hyder F, Ni L, Elkabes S, Heary R, Kannurpatti SS. Association Between Magnetic Resonance Imaging-Based Spinal Morphometry and Sensorimotor Behavior in a Hemicontusion Model of Incomplete Cervical Spinal Cord Injury in Rats. Brain Connectivity 2020, 10: 479-489. PMID: 32981350, PMCID: PMC7698856, DOI: 10.1089/brain.2020.0812.Peer-Reviewed Original ResearchConceptsNeurological outcomeFunctional connectivity changesSpinal cordMagnetic resonance imagingComplete neural axisNeural axisCervical SCIMorphometric changesIncomplete cervical spinal cord injuryC4/C5 levelResonance imagingCervical spinal cord injurySpinal cord injury patientsFunctional connectivityConnectivity changesCord injury patientsT2-weighted lesionsCervical spinal cordSpinal cord injuryYoung adult ratsFunctional connectivity assessmentC5 levelSCI ratsInjury patientsSham ratsAPOE genotype-dependent pharmacogenetic responses to rapamycin for preventing Alzheimer's disease
Lin AL, Parikh I, Yanckello LM, White RS, Hartz AMS, Taylor CE, McCulloch SD, Thalman SW, Xia M, McCarty K, Ubele M, Head E, Hyder F, Sanganahalli BG. APOE genotype-dependent pharmacogenetic responses to rapamycin for preventing Alzheimer's disease. Neurobiology Of Disease 2020, 139: 104834. PMID: 32173556, PMCID: PMC7486698, DOI: 10.1016/j.nbd.2020.104834.Peer-Reviewed Original ResearchConceptsCerebral blood flowAsymptomatic APOE4 carriersE4FAD miceAPOE4 carriersAlzheimer's diseaseCerebrovascular reactivityNeurotransmitter levelsE3FAD micePharmacogenetic responsePharmacogenetic differencesSomatosensory responsesBlood-brain barrier functionBrain functionStrongest genetic risk factorBrain metabolic changesFree fatty acid levelsAmyloid-beta plaquesHuman APOE4 geneDifferent APOE allelesAPOE ε3 alleleFuture clinical testingGenetic risk factorsFatty acid levelsWhite matter integrityAβ transportOrthonasal 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
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
2015
Comparison of glomerular activity patterns by fMRI and wide-field calcium imaging: Implications for principles underlying odor mapping
Sanganahalli BG, Rebello MR, Herman P, Papademetris X, Shepherd GM, Verhagen JV, Hyder F. Comparison of glomerular activity patterns by fMRI and wide-field calcium imaging: Implications for principles underlying odor mapping. NeuroImage 2015, 126: 208-218. PMID: 26631819, PMCID: PMC4733588, DOI: 10.1016/j.neuroimage.2015.11.048.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imagingHigh-resolution functional magnetic resonance imagingPost-synaptic activityPre-synaptic inputOlfactory bulb glomeruliFunctional imaging signalsWide-field calcium imagingMagnetic resonance imagingHemodynamic eventsAnesthetized ratsGlomerular layerNeuronal circuitryGlomerular clustersGlomerular patternNeuropil regionsCalcium imagingDye imagingResonance imagingActivity patternsDeoxyhemoglobin contrastGlomerular activity patternsGlomerular sheetGlomerular networkGlomeruli
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 potentialsFunctional 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 stimulationMitochondrial Functional State Impacts Spontaneous Neocortical Activity and Resting State fMRI
Sanganahalli BG, Herman P, Hyder F, Kannurpatti SS. Mitochondrial Functional State Impacts Spontaneous Neocortical Activity and Resting State fMRI. PLOS ONE 2013, 8: e63317. PMID: 23650561, PMCID: PMC3641133, DOI: 10.1371/journal.pone.0063317.Peer-Reviewed Original ResearchConceptsSpontaneous neuronal activityNeuronal activityCerebral blood flow fluctuationsFunctional connectivityRelevant translational modelState functional connectivityTraumatic brain injuryBlood flow fluctuationsIntrinsic brain activityBrain functional connectivityResting-state fMRIMitochondrial functional stateNeuronal electrical activityFunctional stateReduced RSFCNeural metabolismBrain injuryHemodynamic fluctuationsHemodynamic responseMCU inhibitionNeocortical activityBOLD fluctuationsTranslational modelState fMRIBOLD responseMitochondrial Calcium Uptake Capacity Modulates Neocortical Excitability
Sanganahalli BG, Herman P, Hyder F, Kannurpatti SS. Mitochondrial Calcium Uptake Capacity Modulates Neocortical Excitability. Cerebrovascular And Brain Metabolism Reviews 2013, 33: 1115-1126. PMID: 23591650, PMCID: PMC3705442, DOI: 10.1038/jcbfm.2013.61.Peer-Reviewed Original ResearchConceptsSensory-evoked cortical activityCentral nervous system metabolismCerebral blood flowCortical neuronal activityStimulus-evoked responsesCentral nervous systemBlood oxygen level dependenceNeocortical excitabilityBrain signalingHemodynamic responseBlood flowNeuronal activityNervous systemCortical activityNeocortical activityCalcium changesExtracellular electrophysiologyMCU activityMCU inhibitorVivo impactVivo mitochondriaDependent mannerMultiple subcellular compartmentsRole of mitochondriaUniporter activity