2020
Identification of an Amygdala–Thalamic Circuit That Acts as a Central Gain Mechanism in Taste Perceptions
Veldhuizen MG, Farruggia MC, Gao X, Nakamura Y, Green BG, Small DM. Identification of an Amygdala–Thalamic Circuit That Acts as a Central Gain Mechanism in Taste Perceptions. Journal Of Neuroscience 2020, 40: 5051-5062. PMID: 32371606, PMCID: PMC7314406, DOI: 10.1523/jneurosci.2618-19.2020.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAmygdalaFemaleHumansMaleNeural PathwaysTaste PerceptionThalamusYoung AdultConceptsTaste intensity perceptionHealthy human participantsFunctional magnetic resonanceVentral posterior medial thalamusPosterior medial thalamusIntensity ratingsMedial dorsalMedial thalamusInhibitory outputInhibitory inputsPeripheral sourcesMagnetic resonanceInhibitory influenceIntensity perceptionCentral circuitsGustatory factorsIndividual variationDynamic causal modeling analysisConnectivity strengthAmygdalaMultiple tastantsGustatory systemMean intensity ratingsTaste intensity ratingsAmygdala response
2015
Basolateral Amygdala Response to Food Cues in the Absence of Hunger Is Associated with Weight Gain Susceptibility
Sun X, Kroemer NB, Veldhuizen MG, Babbs AE, de Araujo IE, Gitelman DR, Sherwin RS, Sinha R, Small DM. Basolateral Amygdala Response to Food Cues in the Absence of Hunger Is Associated with Weight Gain Susceptibility. Journal Of Neuroscience 2015, 35: 7964-7976. PMID: 25995480, PMCID: PMC4438134, DOI: 10.1523/jneurosci.3884-14.2015.Peer-Reviewed Original ResearchConceptsAbsence of hungerWeight changeBasolateral amygdalaLong-term weight changeLong-term weight gainWeight gain susceptibilityGustatory inputD2 receptor densityA1 allele carriersAmygdala responseSated subjectsGhrelin levelsInitial BMILateral hypothalamusHuman hypothalamusAllele carriersReceptor densityAmygdala pathwayHealthy individualsElicit eatingDopamine signalingConfer susceptibilityWeight gainDynamic causal modelingNonhomeostatic eating
2012
Acute stress potentiates brain response to milkshake as a function of body weight and chronic stress
Rudenga KJ, Sinha R, Small DM. Acute stress potentiates brain response to milkshake as a function of body weight and chronic stress. International Journal Of Obesity 2012, 37: 309-316. PMID: 22430303, PMCID: PMC3381866, DOI: 10.1038/ijo.2012.39.Peer-Reviewed Original ResearchConceptsBody mass indexFunctional magnetic resonance imagingChronic stressOrbitofrontal cortexRight amygdalaBody weightPalatable foodAcute stressBasal cortisol levelsBrain responsesAmygdala responseMagnetic resonance imagingStress-related eatingMilkshake receiptPalatable milkshakeObese womenOverweight womenMass indexRight amygdala responseOFC responsesPotentiates responsesCortisol levelsLeft amygdalaResonance imagingVentral striatum
2011
Amygdala response to sucrose consumption is inversely related to artificial sweetener use
Rudenga KJ, Small DM. Amygdala response to sucrose consumption is inversely related to artificial sweetener use. Appetite 2011, 58: 504-507. PMID: 22178008, PMCID: PMC3289048, DOI: 10.1016/j.appet.2011.12.001.Peer-Reviewed Original Research
2008
The Spatial Attention Network Interacts with Limbic and Monoaminergic Systems to Modulate Motivation-Induced Attention Shifts
Mohanty A, Gitelman DR, Small DM, Mesulam MM. The Spatial Attention Network Interacts with Limbic and Monoaminergic Systems to Modulate Motivation-Induced Attention Shifts. Cerebral Cortex 2008, 18: 2604-2613. PMID: 18308706, PMCID: PMC2567423, DOI: 10.1093/cercor/bhn021.Peer-Reviewed Original ResearchConceptsPosterior parietal cortexSpatial attentionPosterior cingulateAttentional targetsSpatial attention paradigmFood-related cuesStrong functional couplingAttentional biasingAttentional resourcesAttentional shiftsMotivational relevanceAttention paradigmCentral cuesAttention shiftsMotivational salienceMotivational valueMotivational informationMotivational stateMotivational needsIntraparietal sulcusOrbitofrontal cortexParietal cortexFood targetsSelective allocationMultiple domains
2005
Gustatory agnosia
Small DM, Bernasconi N, Bernasconi A, Sziklas V, Jones-Gotman M. Gustatory agnosia. Neurology 2005, 64: 311-317. PMID: 15668430, DOI: 10.1212/01.wnl.0000149515.77718.35.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgnosiaAmygdalaAnorexiaAtrophyCerebral CortexElectrodes, ImplantedElectroencephalographyEpilepsy, Temporal LobeFemaleFollow-Up StudiesFood PreferencesHippocampusHumansMagnetic Resonance ImagingMeningoencephalitisNeuropsychological TestsOlfaction DisordersPositron-Emission TomographyPostoperative ComplicationsTasteTaste ThresholdTemporal LobeConceptsMedial temporal lobeTemporal lobeSurgical treatmentLeft medial temporal lobeAnteromedial temporal lobeFunctional neuroimaging studiesBilateral atrophyIntractable epilepsyComplete atrophyPreoperative MRIGustatory functionLeft amygdalaLeft insulaChemosensory evaluationNeuroimaging studiesTaste abilityPatientsAtrophyAmygdalaAversive tasteLobeRecognition thresholdAgnosiaTreatmentTaste quality
2003
Dissociation of Neural Representation of Intensity and Affective Valuation in Human Gustation
Small DM, Gregory MD, Mak YE, Gitelman D, Mesulam MM, Parrish T. Dissociation of Neural Representation of Intensity and Affective Valuation in Human Gustation. Neuron 2003, 39: 701-711. PMID: 12925283, DOI: 10.1016/s0896-6273(03)00467-7.Peer-Reviewed Original Research