2024
Frontal Norepinephrine Represents a Threat Prediction Error Under Uncertainty
Basu A, Yang J, Yu A, Glaeser-Khan S, Rondeau J, Feng J, Krystal J, Li Y, Kaye A. Frontal Norepinephrine Represents a Threat Prediction Error Under Uncertainty. Biological Psychiatry 2024, 96: 256-267. PMID: 38316333, PMCID: PMC11269024, DOI: 10.1016/j.biopsych.2024.01.025.Peer-Reviewed Original ResearchPrediction error signalsResponses to conditioned stimuliThreat prediction errorsReinforcement learning modelThreat learningAnticipation of dangerAversive learningMemory strengthConditioned stimulusNoradrenergic signalingDefensive behaviorError signalPrediction errorAuditory stimuliTask structureNorepinephrine releaseNorepinephrineLearning modelsPredictive signalsStimuliFootshockDopamineLearningRewardError
2017
Computational Psychiatry and the Challenge of Schizophrenia
Krystal JH, Murray JD, Chekroud AM, Corlett PR, Yang G, Wang XJ, Anticevic A. Computational Psychiatry and the Challenge of Schizophrenia. Schizophrenia Bulletin 2017, 43: 473-475. PMID: 28338845, PMCID: PMC5464204, DOI: 10.1093/schbul/sbx025.Peer-Reviewed Original ResearchConceptsComputational psychiatryReinforcement learning theoryNeural circuit modelMachine learningComplex datasetsFormal modelLarge datasetsLearning theorySchizophrenia researchDatasetSchizophreniaFormal theoryEnormous challengesPsychiatryDisordersLearningChallengesTheoryDifficultiesModelReadersApplicationsResearchPath
2012
Mild Worry Symptoms Predict Decline in Learning and Memory in Healthy Older Adults: A 2-Year Prospective Cohort Study
Pietrzak RH, Maruff P, Woodward M, Fredrickson J, Fredrickson A, Krystal JH, Southwick SM, Darby D. Mild Worry Symptoms Predict Decline in Learning and Memory in Healthy Older Adults: A 2-Year Prospective Cohort Study. American Journal Of Geriatric Psychiatry 2012, 20: 266-275. PMID: 22354117, PMCID: PMC3285262, DOI: 10.1097/jgp.0b013e3182107e24.Peer-Reviewed Original ResearchConceptsWorry symptomsOlder adultsCommunity-dwelling older adultsCognitive functionAge-related cognitive changesHealthy Older AdultsImportance of anxietyEarly cognitive declineDepressive symptomsAssociate learningCognitive agingVisual learningCognitive changesProspective cohort studyCognitive declineDepression symptomsEarly dementiaCohort studyObservational prospective cohort studyMemoryMild levelsLearningWorryAdultsTheoretical model
2010
Toward a neurobiology of delusions
Corlett PR, Taylor JR, Wang X, Fletcher PC, Krystal JH. Toward a neurobiology of delusions. Progress In Neurobiology 2010, 92: 345-369. PMID: 20558235, PMCID: PMC3676875, DOI: 10.1016/j.pneurobio.2010.06.007.Peer-Reviewed Original ResearchConceptsFundamental brain mechanismsFronto-striatal circuitsTerms of cognitionPsychological processesBrain mechanismsComputational mechanismsCortical hierarchyPrediction errorSocial learningParietal cortexExternal worldBrain circuitsNeurobiological abnormalitiesNeurobiology of delusionsBrain functionHierarchical predictionBodily agencyDelusionsMemoryReinforcement learningPerceptionMental illnessTranslational understandingLearningCognitionSex-related differences in amygdala activity influences immediate memory
Aikins DE, Anticevic A, Kiehl KA, Krystal JH. Sex-related differences in amygdala activity influences immediate memory. Neuroreport 2010, 21: 273-276. PMID: 20093991, DOI: 10.1097/wnr.0b013e328335b3f9.Peer-Reviewed Original ResearchMeSH KeywordsAdultAmygdalaEmotionsFemaleFunctional LateralityHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMemory, Short-TermMiddle AgedNeuropsychological TestsPattern Recognition, VisualPhotic StimulationPsychomotor PerformanceRecognition, PsychologyRegression AnalysisSex CharacteristicsSex FactorsConceptsAmygdala activationImmediate memoryUnpleasant picturesImmediate recognition memoryRecognition memory testRight amygdala activationLong-term memoryFunctional magnetic resonanceUnpleasant picture viewingEmotional picturesRecognition memoryMemory testAmygdala responsePicture viewingMemoryFalse positive error rateSex differencesSex-related differencesAmygdalaError ratePictureViewingLearningMagnetic resonanceDifferences
2009
Efficacy of D-Cycloserine for Enhancing Response to Cognitive-Behavior Therapy for Panic Disorder
Otto MW, Tolin DF, Simon NM, Pearlson GD, Basden S, Meunier SA, Hofmann SG, Eisenmenger K, Krystal JH, Pollack MH. Efficacy of D-Cycloserine for Enhancing Response to Cognitive-Behavior Therapy for Panic Disorder. Biological Psychiatry 2009, 67: 365-370. PMID: 19811776, DOI: 10.1016/j.biopsych.2009.07.036.Peer-Reviewed Original ResearchConceptsCognitive behavior therapyExposure-based cognitive behavior therapyD-cycloserinePanic disorderTherapeutic learningPanic Disorder Severity ScaleInternal sensationsManualized cognitive behavior therapyPlacebo-controlled augmentation trialD-cycloserine augmentationLarge effect sizesExposure interventionDCS administrationPill placeboAnxiety disordersDSM-IV criteriaSession 3Global ImpressionEffect sizePrimary outcome measureClinician Global ImpressionDisordersParticipantsLearningSignificant adverse effectsWhy Do Delusions Persist?
Corlett PR, Krystal JH, Taylor JR, Fletcher PC. Why Do Delusions Persist? Frontiers In Human Neuroscience 2009, 3: 12. PMID: 19636384, PMCID: PMC2713737, DOI: 10.3389/neuro.09.012.2009.Peer-Reviewed Original Research