2022
Reward-Mediated, Model-Free Reinforcement-Learning Mechanisms in Pavlovian and Instrumental Tasks Are Related
Afshar N, Cinotti F, Martin D, Khamassi M, Calu DJ, Taylor JR, Groman SM. Reward-Mediated, Model-Free Reinforcement-Learning Mechanisms in Pavlovian and Instrumental Tasks Are Related. Journal Of Neuroscience 2022, 43: 458-471. PMID: 36216504, PMCID: PMC9864557, DOI: 10.1523/jneurosci.1113-22.2022.Peer-Reviewed Original ResearchConceptsGoal-tracking behaviorReinforcement learning mechanismInstrumental learning processesSign-tracking behaviorModel-free reinforcementApproach taskInstrumental taskInstrumental behaviorBehavioral proceduresSubjects designLearning mechanismDecision Making TaskModel-based computationLearning processModel-free reinforcement learningPredictive cuesIncentive salienceAssociative learningIndividual differencesComputational mechanismsDecision-making processPavlovianModel-based algorithmValue representationAction values
2020
Reinforcement Learning during Adolescence in Rats
Afshar N, Keip AJ, Taylor JR, Lee D, Groman SM. Reinforcement Learning during Adolescence in Rats. Journal Of Neuroscience 2020, 40: 5857-5870. PMID: 32601244, PMCID: PMC7380962, DOI: 10.1523/jneurosci.0910-20.2020.Peer-Reviewed Original ResearchConceptsNovel behavioral protocolReversal-learning performanceAdaptive choice behaviorBehavioral protocolFemale Long-Evans ratsReversal performanceChoice behaviorLong-Evans ratsAdolescent brain functionAge-related improvementsReinforcement-learning mechanismsReversal-learning taskReversal-learning paradigmDecision-making paradigmReinforcement learning mechanismAdolescent ratsLongitudinal designAge-related changesNeurodevelopmental mechanismsAdolescencePositive outcomesBrain functionFunction of circuitsPostnatal day 30Adulthood
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