Featured Publications
Lesions to the mediodorsal thalamus, but not orbitofrontal cortex, enhance volatility beliefs linked to paranoia
Suthaharan P, Thompson S, Rossi-Goldthorpe R, Rudebeck P, Walton M, Chakraborty S, Noonan M, Costa V, Murray E, Mathys C, Groman S, Mitchell A, Taylor J, Corlett P, Chang S. Lesions to the mediodorsal thalamus, but not orbitofrontal cortex, enhance volatility beliefs linked to paranoia. Cell Reports 2024, 43: 114355. PMID: 38870010, PMCID: PMC11231991, DOI: 10.1016/j.celrep.2024.114355.Peer-Reviewed Original ResearchOrbitofrontal cortexMediodorsal thalamusReward learning rateAssociated with paranoiaExcitotoxic lesionsBrain regionsUnoperated monkeysAction selectionAdaptive behaviorParanoiaBelief updatingMDmcMeaningful changeCortexThalamusBeliefsLearning rateRobust to variabilityCompare performanceRewardBehaviorBrainMonkeysAction policiesPerceptionDissociation of vicarious and experienced rewards by coupling frequency within the same neural pathway
Putnam P, Chu C, Fagan N, Dal Monte O, Chang S. Dissociation of vicarious and experienced rewards by coupling frequency within the same neural pathway. Neuron 2023, 111: 2513-2522.e4. PMID: 37348507, PMCID: PMC10527039, DOI: 10.1016/j.neuron.2023.05.020.Peer-Reviewed Original ResearchConceptsExperienced rewardsVicarious rewardBasolateral amygdalaAlpha/beta frequencyLocal field potentialsSame neural pathwaysSelect brain regionsSocial learningNeural systemsSocial interactionDirectional influenceRewardBrain regionsBeta frequenciesNeural pathwaysGamma frequenciesShared experienceDecision makingNeuronal interactionsSocial agencyField potentialsVoluntary choiceSocial choiceGyrusAmygdalaSpecialized medial prefrontal–amygdala coordination in other-regarding decision preference
Dal Monte O, Chu CCJ, Fagan NA, Chang SWC. Specialized medial prefrontal–amygdala coordination in other-regarding decision preference. Nature Neuroscience 2020, 23: 565-574. PMID: 32094970, PMCID: PMC7131896, DOI: 10.1038/s41593-020-0593-y.Peer-Reviewed Original ResearchConceptsMultiple cognitive operationsRostral anterior cingulate gyrusMedial prefrontal cortexSubcortical brain regionsAnterior cingulate gyrusCognitive operationsGamma frequency bandSocial decisionsSpecialized coordinationPrefrontal cortexNegative ORPSocial behaviorNeural populationsCingulate gyrusBrain regionsBasolateral amygdalaNetwork interactDecision preferencesSpecific directionalityNeuronal interactionsRewardGyrusAmygdalaPreferencesCortex
2012
Inhaled oxytocin amplifies both vicarious reinforcement and self reinforcement in rhesus macaques (Macaca mulatta)
Chang SW, Barter JW, Ebitz RB, Watson KK, Platt ML. Inhaled oxytocin amplifies both vicarious reinforcement and self reinforcement in rhesus macaques (Macaca mulatta). Proceedings Of The National Academy Of Sciences Of The United States Of America 2012, 109: 959-964. PMID: 22215593, PMCID: PMC3271866, DOI: 10.1073/pnas.1114621109.Peer-Reviewed Original ResearchConceptsDelivery of rewardTypical social behaviorsProsocial choicesDecision latenciesObservational learningSpecies-typical social behaviorsNeural mechanismsSelfish choicesVicarious reinforcementSocial behaviorDistinct contextsDonation behaviorHuman behaviorNeural modelRewardSocial awarenessSelf-ReinforcementOxytocinPrairie volesSelfMonogamous onesRhesus macaquesOwn experienceEmpathyAttention