2020
Loss of nucleus accumbens low-frequency fluctuations is a signature of chronic pain
Makary MM, Polosecki P, Cecchi GA, DeAraujo IE, Barron DS, Constable TR, Whang PG, Thomas DA, Mowafi H, Small DM, Geha P. Loss of nucleus accumbens low-frequency fluctuations is a signature of chronic pain. Proceedings Of The National Academy Of Sciences Of The United States Of America 2020, 117: 10015-10023. PMID: 32312809, PMCID: PMC7211984, DOI: 10.1073/pnas.1918682117.Peer-Reviewed Original ResearchConceptsChronic low back pain patientsLow back pain patientsChronic painPain patientsChronic phaseChronic back pain patientsBack pain patientsRostral anterior cingulate cortexAnterior cingulate cortexAdditional independent datasetsRisk of transitionResting-state activityPersistent painBack painAccumbens volumeHealthy controlsNucleus accumbensPainSeparate cohortPatientsCingulate cortexPrevalent diseaseFunctional connectivityLoss of nucleiSubcortical signatures
2018
Sweet taste potentiates the reinforcing effects of e-cigarettes
Kroemer NB, Veldhuizen MG, Delvy R, Patel BP, O'Malley SS, Small DM. Sweet taste potentiates the reinforcing effects of e-cigarettes. European Neuropsychopharmacology 2018, 28: 1089-1102. PMID: 30093174, DOI: 10.1016/j.euroneuro.2018.07.102.Peer-Reviewed Original Research
2016
Reorganization of brain connectivity in obesity
Geha P, Cecchi G, Constable R, Abdallah C, Small DM. Reorganization of brain connectivity in obesity. Human Brain Mapping 2016, 38: 1403-1420. PMID: 27859973, PMCID: PMC6866793, DOI: 10.1002/hbm.23462.Peer-Reviewed Original ResearchConceptsGlobal brain connectivityDorsal attention networkPeripheral metabolic dysfunctionHum Brain MappSuperior parietal lobuleSomatomotor cortexMetabolic dysfunctionVentrolateral prefrontal cortexPremotor areasCaudate nucleusNeurocognitive impairmentObesityAnterior hippocampusVisual cortexBrain regionsParietal lobuleBrain functionPrefrontal cortexBrain connectivityMilkshake consumptionCortexFeeding decisionsBrain organizationInsulaHomeostatic stateFuel not fun: Reinterpreting attenuated brain responses to reward in obesity
Kroemer NB, Small DM. Fuel not fun: Reinterpreting attenuated brain responses to reward in obesity. Physiology & Behavior 2016, 162: 37-45. PMID: 27085908, PMCID: PMC4971522, DOI: 10.1016/j.physbeh.2016.04.020.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnticipation, PsychologicalBrain MappingCorpus StriatumFoodHumansNeuroimagingObesityReinforcement, PsychologyConceptsFood-related stimuliBrain responsesReward-related learningReward sensitivityReward deficiencyReduced reward sensitivityPrimary food rewardReward receiptMilkshake receiptStriatal responsesReward deficitsFood rewardSubjective valueReinforcement learning frameworkRewardDopamine signalingFood anticipationDorsal striatumAnhedoniaAnticipatoryDopaminergic regionsStimuliConsummatory responsesAlternative viewLearning
2015
What Can the Brain Teach Us about Winemaking? An fMRI Study of Alcohol Level Preferences
Frost R, Quiñones I, Veldhuizen M, Alava JI, Small D, Carreiras M. What Can the Brain Teach Us about Winemaking? An fMRI Study of Alcohol Level Preferences. PLOS ONE 2015, 10: e0119220. PMID: 25785844, PMCID: PMC4364721, DOI: 10.1371/journal.pone.0119220.Peer-Reviewed Original Research
2014
The neural signature of satiation is associated with ghrelin response and triglyceride metabolism
Sun X, Veldhuizen MG, Wray AE, de Araujo IE, Sherwin RS, Sinha R, Small DM. The neural signature of satiation is associated with ghrelin response and triglyceride metabolism. Physiology & Behavior 2014, 136: 63-73. PMID: 24732416, PMCID: PMC4195817, DOI: 10.1016/j.physbeh.2014.04.017.Peer-Reviewed Original ResearchConceptsPalatable foodMeal terminationBrain responsesAd libitum mealPost-prandial reductionMedial orbitofrontal cortexDorsolateral prefrontal cortexGhrelin responseAcute changesFree fatty acidsPeripheral signalsTriglyceride metabolismBrain regionsBrain circuitsOrbitofrontal cortexPrefrontal cortexAmount of foodGhrelinMidbrainMilkshakeTriglyceridesCortexFatty acidsEnergy storesGreater attenuation
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 striatumFood and drug cues activate similar brain regions: A meta-analysis of functional MRI studies
Tang D, Fellows L, Small D, Dagher A. Food and drug cues activate similar brain regions: A meta-analysis of functional MRI studies. Physiology & Behavior 2012, 106: 317-324. PMID: 22450260, DOI: 10.1016/j.physbeh.2012.03.009.Peer-Reviewed Original ResearchConceptsSmoking cuesOrbital frontal cortexNeutral cuesFood cuesVisual foodBlood oxygen level-dependent (BOLD) responseBrain regionsSimilar brain regionsBilateral orbital frontal cortexActivation likelihood estimationFrontal cortexFunctional MRI studyLevel-dependent responsesBrain imaging studiesNeuro-imaging studiesDrug cuesImaging studiesInsula activationSubjective cravingConditioned cuesIncentive salienceBrain responsesBilateral insulaBrain networksLeft amygdala
2011
The Anterior Insular Cortex Represents Breaches of Taste Identity Expectation
Veldhuizen MG, Douglas D, Aschenbrenner K, Gitelman DR, Small DM. The Anterior Insular Cortex Represents Breaches of Taste Identity Expectation. Journal Of Neuroscience 2011, 31: 14735-14744. PMID: 21994389, PMCID: PMC3221736, DOI: 10.1523/jneurosci.1502-11.2011.Peer-Reviewed Original ResearchModality-Specific Neural Effects of Selective Attention to Taste and Odor
Veldhuizen MG, Small DM. Modality-Specific Neural Effects of Selective Attention to Taste and Odor. Chemical Senses 2011, 36: 747-760. PMID: 21685407, PMCID: PMC3175104, DOI: 10.1093/chemse/bjr043.Peer-Reviewed Original ResearchConceptsPrimary olfactory cortexPrimary taste cortexAnterior insular cortexInsular cortexOlfactory cortexTaste cortexPrimary gustatory cortexFunctional magnetic resonancePrimary olfactoryGustatory cortexModality-specific activationInsular responsesNeural effectsCortexBrain responsesMultimodal regionsTaste perceptionMagnetic resonanceGeneral effectSelective attentionActivationResponseYouth at Risk for Obesity Show Greater Activation of Striatal and Somatosensory Regions to Food
Stice E, Yokum S, Burger KS, Epstein LH, Small DM. Youth at Risk for Obesity Show Greater Activation of Striatal and Somatosensory Regions to Food. Journal Of Neuroscience 2011, 31: 4360-4366. PMID: 21430137, PMCID: PMC3260083, DOI: 10.1523/jneurosci.6604-10.2011.Peer-Reviewed Original ResearchConceptsNormal weight humansObese humansStriatal responsesFood intakeOrbitofrontal cortexDopamine signalingWeight gainInitial vulnerability factorsGenetic riskStriatal D2 receptorsMonetary rewardsNormal-weight adolescentsPalatable food intakeD2 receptor densityD2 receptorsHigh-risk youthParietal operculumReceptor densitySomatosensory regionsPalatable foodFoods contributesFrontal operculumReward circuitryReduced dopamineObesity
2010
Evidence for an Integrated Oral Sensory Module in the Human Anterior Ventral Insula
Rudenga K, Green B, Nachtigal D, Small DM. Evidence for an Integrated Oral Sensory Module in the Human Anterior Ventral Insula. Chemical Senses 2010, 35: 693-703. PMID: 20595201, PMCID: PMC2943409, DOI: 10.1093/chemse/bjq068.Peer-Reviewed Original ResearchConceptsAnterior ventral insulaVentral insulaOral stimulationTasteless control solutionFunctional magnetic resonanceVentral pallidumPhysiological significanceHarmful stimuliInsular responsesInsulaOral sensationNutritive stimulusModalitiesDifferential connectivityPresent studyStimulationMagnetic resonanceSensory modalitiesSubjectsHypothalamusStimuliStriatumPallidumGenetically Determined Differences in Brain Response to a Primary Food Reward
Felsted JA, Ren X, Chouinard-Decorte F, Small DM. Genetically Determined Differences in Brain Response to a Primary Food Reward. Journal Of Neuroscience 2010, 30: 2428-2432. PMID: 20164326, PMCID: PMC2831082, DOI: 10.1523/jneurosci.5483-09.2010.Peer-Reviewed Original ResearchConceptsBrain responsesPrimary food rewardFunctional magnetic resonanceTaqIA A1 alleleOrbital frontal cortexReward driveIndividual differencesNeural responsesFuture weight gainFood rewardPalatable foodNeuroimaging techniquesPerceptual responsesBiological underpinningsIndividual factorsFrontal cortexImpulsivityDiminished dopamineSimilar ratingsFood reinforcementRewardSpecific associationNeurophysiologyMilkshakeBody mass index
2008
Relation of Reward From Food Intake and Anticipated Food Intake to Obesity: A Functional Magnetic Resonance Imaging Study
Stice E, Spoor S, Bohon C, Veldhuizen MG, Small DM. Relation of Reward From Food Intake and Anticipated Food Intake to Obesity: A Functional Magnetic Resonance Imaging Study. Journal Of Psychopathology And Clinical Science 2008, 117: 924-935. PMID: 19025237, PMCID: PMC2681092, DOI: 10.1037/a0013600.Peer-Reviewed Original ResearchConceptsFunctional magnetic resonance imagingAdolescent girlsGreater activationFunctional magnetic resonance imaging studySomatosensory regionsRelation of rewardGustatory cortexDopamine receptor availabilityMagnetic resonance imaging studyResonance imaging studyChocolate milkshakeTasteless solutionConsequent weight gainFood intakeBrain regionsGreater rewardsHedonic aspectsDecreased activationWeak activationRewardReceptor availabilityMilkshakeGirlsImaging studiesMagnetic resonance imagingSeparable Substrates for Anticipatory and Consummatory Food Chemosensation
Small DM, Veldhuizen MG, Felsted J, Mak YE, McGlone F. Separable Substrates for Anticipatory and Consummatory Food Chemosensation. Neuron 2008, 57: 786-797. PMID: 18341997, PMCID: PMC2669434, DOI: 10.1016/j.neuron.2008.01.021.Peer-Reviewed Original Research
2007
Trying to Detect Taste in a Tasteless Solution: Modulation of Early Gustatory Cortex by Attention to Taste
Veldhuizen MG, Bender G, Constable RT, Small DM. Trying to Detect Taste in a Tasteless Solution: Modulation of Early Gustatory Cortex by Attention to Taste. Chemical Senses 2007, 32: 569-581. PMID: 17495173, DOI: 10.1093/chemse/bjm025.Peer-Reviewed Original Research
2005
Taste and Olfactory Intensity Perception Changes Following Left Insular Stroke
Mak YE, Simmons KB, Gitelman DR, Small DM. Taste and Olfactory Intensity Perception Changes Following Left Insular Stroke. Behavioral Neuroscience 2005, 119: 1693-1700. PMID: 16420174, DOI: 10.1037/0735-7044.119.6.1693.Peer-Reviewed Original ResearchDifferential Neural Responses Evoked by Orthonasal versus Retronasal Odorant Perception in Humans
Small DM, Gerber JC, Mak YE, Hummel T. Differential Neural Responses Evoked by Orthonasal versus Retronasal Odorant Perception in Humans. Neuron 2005, 47: 593-605. PMID: 16102541, DOI: 10.1016/j.neuron.2005.07.022.Peer-Reviewed Original ResearchConceptsOrbitofrontal cortexCaudolateral orbitofrontal cortexRoute of deliveryInsula/operculumMedial orbitofrontal cortexPerigenual cingulateOral cavityCentral sulcusDifferential neural responsesRetronasal olfactionRetronasal routeBrain responsesNeural responsesNeural recruitmentDifferential activationPreferential activityCortexOdorant perceptionOrthonasalRetronasalDifferential neural recruitmentDeliveryResponseThalamusHippocampus
2004
Experience-Dependent Neural Integration of Taste and Smell in the Human Brain
Small DM, Voss J, Mak YE, Simmons KB, Parrish T, Gitelman D. Experience-Dependent Neural Integration of Taste and Smell in the Human Brain. Journal Of Neurophysiology 2004, 92: 1892-1903. PMID: 15102894, DOI: 10.1152/jn.00050.2004.Peer-Reviewed Original ResearchMeSH KeywordsAdultAnalysis of VarianceBrainBrain MappingFemaleHumansLife Change EventsMaleSmellTasteConceptsAnterior cingulate cortexPosterior parietal cortexOrbitofrontal cortexCaudal orbitofrontal cortexFrontal operculumPrefrontal cortexParietal cortexFlavor perceptionVentral lateral prefrontal cortexVentral insulaEvent-related fMRIVentrolateral prefrontal cortexLateral prefrontal cortexDistinct sensory inputsAnterior ventral insulaPerception of flavorUnimodal stimuliSuperadditive responsesNeural correlatesBrain responsesNeural responsesFlavor processingNeural suppressionOlfactory deliveryDorsal insulaCrossmodal integration – insights from the chemical senses
Small D. Crossmodal integration – insights from the chemical senses. Trends In Neurosciences 2004, 27: 120-123. PMID: 15046082, DOI: 10.1016/j.tins.2004.01.002.Peer-Reviewed Original ResearchConceptsSuperior temporal sulcusStudy of auditionMultisensory integrationNeural correlatesTemporal sulcusVisual cuesOrbitofrontal cortexAssociation cortexHuman brainCrossmodalChemical sensesCortexAuditionCuesCongruencySomatosensationSulcusSensesCorrelatesOdor detectionFacilitationUnderstandingNew studiesBrain