2022
Functional Connectivity of the Nucleus Accumbens and Changes in Appetite in Patients With Depression
Kroemer NB, Opel N, Teckentrup V, Li M, Grotegerd D, Meinert S, Lemke H, Kircher T, Nenadić I, Krug A, Jansen A, Sommer J, Steinsträter O, Small DM, Dannlowski U, Walter M. Functional Connectivity of the Nucleus Accumbens and Changes in Appetite in Patients With Depression. JAMA Psychiatry 2022, 79: 993-1003. PMID: 36001327, PMCID: PMC9403857, DOI: 10.1001/jamapsychiatry.2022.2464.Peer-Reviewed Original ResearchMeSH KeywordsAdultAppetiteBody WeightCase-Control StudiesCohort StudiesCross-Sectional StudiesDepressionDepressive Disorder, MajorFemaleHumansMagnetic Resonance ImagingMaleNucleus AccumbensConceptsMajor depressive disorderNAcc functional connectivityFunctional connectivityBody weightNucleus accumbensTreatment of MDDResting-state functional connectivityCase-control studySymptom-specific associationsHealthy control participantsIdentification of biomarkersClassification of diagnosesCohort studyMost patientsMean ageDepressive episodeDepressive disorderReduced appetiteMagnetic resonance imaging dataMAIN OUTCOMESubstantial burdenDepressive symptomsPatientsVentromedial prefrontal cortexReward circuitChronic pain precedes disrupted eating behavior in low-back pain patients
Lin Y, De Araujo I, Stanley G, Small D, Geha P. Chronic pain precedes disrupted eating behavior in low-back pain patients. PLOS ONE 2022, 17: e0263527. PMID: 35143525, PMCID: PMC8830732, DOI: 10.1371/journal.pone.0263527.Peer-Reviewed Original ResearchMeSH KeywordsAdultAppetiteChronic PainDietary FatsFeeding BehaviorFemaleFollow-Up StudiesFood PreferencesHumansLow Back PainMagnetic Resonance ImagingMaleNucleus AccumbensPleasureConceptsLow back pain patientsChronic low back pain patientsFat-rich foodsPain patientsChronic painCLBP patientsSBP patientsNucleus accumbensBack pain patientsChronic pain patientsHealthy control subjectsNucleus accumbens volumePain chronificationFat ingestionHedonic feedingPatient populationAccumbens volumeControl subjectsLimbic brainPainEarly coursePatientsBehavioral alterationsHedonic perceptionNeurological standpoint
2021
Post-traumatic olfactory loss and brain response beyond olfactory cortex
Pellegrino R, Farruggia MC, Small DM, Veldhuizen MG. Post-traumatic olfactory loss and brain response beyond olfactory cortex. Scientific Reports 2021, 11: 4043. PMID: 33597627, PMCID: PMC7889874, DOI: 10.1038/s41598-021-83621-2.Peer-Reviewed Original ResearchConceptsPosterior cingulate cortexOlfactory impairmentOlfactory cortexFunctional anosmiaPost-traumatic olfactory lossPrimary olfactory areasWhole-brain responsesBrain responsesGray matter densityHigher-order areasOlfactory lossPiriform cortexHead traumaHealthy controlsOlfactory areasOdorless stimuliOlfactory functionMediodorsal thalamusCortical areasVentromedial prefrontal cortexCingulate cortexFrontal operculumCortexAnterior insulaPrefrontal cortex
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 ResearchMeSH KeywordsAdultBack PainBrainBrain MappingChronic PainFemaleGyrus CinguliHumansMagnetic Resonance ImagingMaleNerve NetNeural PathwaysNucleus AccumbensRisk FactorsConceptsChronic 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
Food Intake Recruits Orosensory and Post-ingestive Dopaminergic Circuits to Affect Eating Desire in Humans
Thanarajah SE, Backes H, DiFeliceantonio AG, Albus K, Cremer AL, Hanssen R, Lippert RN, Cornely OA, Small DM, Brüning JC, Tittgemeyer M. Food Intake Recruits Orosensory and Post-ingestive Dopaminergic Circuits to Affect Eating Desire in Humans. Cell Metabolism 2018, 29: 695-706.e4. PMID: 30595479, DOI: 10.1016/j.cmet.2018.12.006.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBrainDopamineEatingFood PreferencesHealthy VolunteersHumansMagnetic Resonance ImagingMaleMiddle AgedTasteConceptsDopaminergic circuitsHigher cognitive centersSegregated brain regionsPeripheral physiological signalsPalatable food intakeReward valueDopamine releaseCognitive centersSubjective desireBrain regionsBrain areasUnderlying reinforcementFood intakeDorsal striatumRole of brainPhysiological signalsFood selection behaviorIntegrative pathwaysFMRIDesirePET methodBrainHumansIntakeSelection behaviorSweet 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 ResearchSupra-Additive Effects of Combining Fat and Carbohydrate on Food Reward
DiFeliceantonio AG, Coppin G, Rigoux L, Thanarajah S, Dagher A, Tittgemeyer M, Small DM. Supra-Additive Effects of Combining Fat and Carbohydrate on Food Reward. Cell Metabolism 2018, 28: 33-44.e3. PMID: 29909968, DOI: 10.1016/j.cmet.2018.05.018.Peer-Reviewed Original ResearchMeSH KeywordsAdultBrainDietary CarbohydratesDietary FatsFemaleFood PreferencesHumansMagnetic Resonance ImagingMaleNutritive ValueReward
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 ResearchMeSH KeywordsAdultAge FactorsBrainBrain MappingEatingFemaleHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMiddle AgedMotionNeural PathwaysObesityOxygenConceptsGlobal 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 state
2015
Weighing the evidence: Variance in brain responses to milkshake receipt is predictive of eating behavior
Kroemer NB, Sun X, Veldhuizen MG, Babbs AE, de Araujo IE, Small DM. Weighing the evidence: Variance in brain responses to milkshake receipt is predictive of eating behavior. NeuroImage 2015, 128: 273-283. PMID: 26724781, DOI: 10.1016/j.neuroimage.2015.12.031.Peer-Reviewed Original ResearchConceptsBrain responsesHigher body mass indexAd libitum food consumptionBody mass indexGreater weight lossNucleus Accumbens ResponseFunctional magnetic resonanceMilkshake receiptMass indexPlasma insulinPlasma glucoseMetabolic parametersDietary disinhibitionStriatal activityVariable response patternsWeight lossFood stimuliMetabolic responseSensory stimuliFood consumptionIntra-individual variationVariable responseMilkshakeMagnetic resonanceResponse patternsWhat 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 ResearchOpposing relationships of BMI with BOLD and dopamine D2/3 receptor binding potential in the dorsal striatum
Cosgrove KP, Veldhuizen MG, Sandiego CM, Morris ED, Small DM. Opposing relationships of BMI with BOLD and dopamine D2/3 receptor binding potential in the dorsal striatum. Synapse 2015, 69: 195-202. PMID: 25664726, PMCID: PMC4411955, DOI: 10.1002/syn.21809.Peer-Reviewed Original ResearchConceptsBody mass indexPalatable food consumptionDorsal striatumMass indexBOLD responseReceptor availabilityRelationship of BMIFood consumptionPET studiesMagnetic resonance imaging studyPositron emission tomography studyBlood oxygen level-dependent (BOLD) responseDopamine D2/3 receptorsHigh-fat dietDopamine receptor levelsEmission tomography studiesFMRI studyResonance imaging studyFunctional magnetic resonance imaging studyLevel-dependent responsesReliable inverse relationshipHealthy weightD2/3 receptorsStriatal circuitryFat diet
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
2013
Ventromedial Prefrontal Cortex Response to Concentrated Sucrose Reflects Liking Rather Than Sweet Quality Coding
Rudenga KJ, Small DM. Ventromedial Prefrontal Cortex Response to Concentrated Sucrose Reflects Liking Rather Than Sweet Quality Coding. Chemical Senses 2013, 38: 585-594. PMID: 23828907, PMCID: PMC3747761, DOI: 10.1093/chemse/bjt029.Peer-Reviewed Original ResearchMetabolic Regulation of Brain Response to Food Cues
de Araujo IE, Lin T, Veldhuizen MG, Small DM. Metabolic Regulation of Brain Response to Food Cues. Current Biology 2013, 23: 878-883. PMID: 23643837, PMCID: PMC3767438, DOI: 10.1016/j.cub.2013.04.001.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBlood GlucoseFeeding BehaviorHypothalamusMagnetic Resonance ImagingNucleus AccumbensPolysaccharidesNeural Correlates of Stress- and Food Cue–Induced Food Craving in Obesity Association with insulin levels
Jastreboff AM, Sinha R, Lacadie C, Small DM, Sherwin RS, Potenza MN. Neural Correlates of Stress- and Food Cue–Induced Food Craving in Obesity Association with insulin levels. Diabetes Care 2013, 36: 394-402. PMID: 23069840, PMCID: PMC3554293, DOI: 10.2337/dc12-1112.Peer-Reviewed Original ResearchMeSH KeywordsAdultBinge-Eating DisorderBrainCuesFemaleHumansInsulinMagnetic Resonance ImagingMaleMiddle AgedObesityStress, PsychologicalConceptsFood cuesFood cravingsStress cuesBrain responsesSubjective food cravingsFavorite-food cuesBrain regionsInsulin levelsNeural correlatesBrain activationHOMA-IRObese individualsInsulin sensitivityFood motivationNeural activityFunctional MRICuesCravingHOMA-IR levelsNeurocircuitryLean subjectsInsulin resistanceLean individualsObesity associationHypothalamic regions
2012
Altered hypothalamic response to food in smokers 1 , 2 , 3
Geha PY, Aschenbrenner K, Felsted J, O'Malley SS, Small DM. Altered hypothalamic response to food in smokers 1 , 2 , 3. American Journal Of Clinical Nutrition 2012, 97: 15-22. PMID: 23235196, PMCID: PMC3522134, DOI: 10.3945/ajcn.112.043307.Peer-Reviewed Original ResearchMeSH KeywordsAdultBody Mass IndexFeeding BehaviorFemaleFollow-Up StudiesHumansHungerHypothalamusLongitudinal StudiesMagnetic Resonance ImagingMaleSmokingWeight GainConceptsWeight changeBrain responsesFunctional MRILong-term weight changeAltered brain responsesTasteless control solutionMilk shakeEnergy-dense foodsGroup of ageSmoking statusSmoking cessationSmoking influencesHypothalamic responseNonsmokersSmokersVentral striatumWeight gainBMIHypothalamusGreater responseResponseFoodStudy 1ThalamusGroupThe effect of verbal context on olfactory neural responses
Bensafi M, Croy I, Phillips N, Rouby C, Sezille C, Gerber J, Small DM, Hummel T. The effect of verbal context on olfactory neural responses. Human Brain Mapping 2012, 35: 810-818. PMID: 23225581, PMCID: PMC6869804, DOI: 10.1002/hbm.22215.Peer-Reviewed Original ResearchMidbrain response to milkshake correlates with ad libitum milkshake intake in the absence of hunger
Nolan-Poupart S, Veldhuizen MG, Geha P, Small DM. Midbrain response to milkshake correlates with ad libitum milkshake intake in the absence of hunger. Appetite 2012, 60: 168-174. PMID: 23064394, PMCID: PMC3526000, DOI: 10.1016/j.appet.2012.09.032.Peer-Reviewed Original ResearchConceptsAbsence of hungerFunctional magnetic resonance imagingSubsequent intakeRatings of hungerPeriaqueductal gray regionMidbrain responsesMagnetic resonance imagingKey reward regionsPalatable milkshakeSignificant positive associationPalatable foodResonance imagingInsular responsesOrbitofrontal cortexNeural circuitsGreater intakeMilkshake consumptionIntakeReward regionsBrain responsesEnhanced responseMilkshakePositive associationMidbrainGray regionAcute 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 ResearchMeSH KeywordsAnimalsBrainBrain MappingCuesFoodHumansImage Processing, Computer-AssistedLikelihood FunctionsMagnetic Resonance ImagingOxygenPhotic StimulationPubMedSmokingConceptsSmoking 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