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 policiesPerceptionThe anterior cingulate cortex is necessary for forming prosocial preferences from vicarious reinforcement in monkeys
Basile BM, Schafroth JL, Karaskiewicz CL, Chang SWC, Murray EA. The anterior cingulate cortex is necessary for forming prosocial preferences from vicarious reinforcement in monkeys. PLOS Biology 2020, 18: e3000677. PMID: 32530910, PMCID: PMC7292358, DOI: 10.1371/journal.pbio.3000677.Peer-Reviewed Original ResearchConceptsAnterior cingulate cortexProsocial preferencesVicarious reinforcementCingulate cortexACC lesionsPrimate anterior cingulate cortexSocial preferencesDifferent visual cuesSocial cognitionReward outcomesReinforcement taskReward deliveryVisual cuesACC contributionSocial outcomesCuesSocial relationshipsExcitotoxic lesionsPeripheral targetsGood thingGreater tendencySelfCortexLesion groupSingle neurons