2022
Reward and loss incentives improve spatial working memory by shaping trial-by-trial posterior frontoparietal signals
Cho YT, Moujaes F, Schleifer CH, Starc M, Ji JL, Santamauro N, Adkinson B, Kolobaric A, Flynn M, Krystal JH, Murray JD, Repovs G, Anticevic A. Reward and loss incentives improve spatial working memory by shaping trial-by-trial posterior frontoparietal signals. NeuroImage 2022, 254: 119139. PMID: 35346841, PMCID: PMC9264479, DOI: 10.1016/j.neuroimage.2022.119139.Peer-Reviewed Original ResearchConceptsMemory precisionSpatial working memoryIntraparietal sulcusPrecentral sulcusWorking memoryMotivational signalsBOLD signalParietal cortexReward/lossVisual association regionsDorsolateral prefrontal cortexGoal-directed activityMemory paradigmMemory performanceMemory processesAnterior parietal cortexExecutive networkNeural changesSensory processesPrefrontal cortexLoss incentivesVentral striatumNon-human primate studiesTranslational neuroscienceMemory
2019
Salience Network Disruption in U.S. Army Soldiers With Posttraumatic Stress Disorder
Abdallah CG, Averill CL, Ramage AE, Averill LA, Goktas S, Nemati S, Krystal JH, Roache JD, Resick PA, Young-McCaughan S, Peterson AL, Fox P, Consortium T. Salience Network Disruption in U.S. Army Soldiers With Posttraumatic Stress Disorder. Chronic Stress 2019, 3: 2470547019850467. PMID: 31131337, PMCID: PMC6529942, DOI: 10.1177/2470547019850467.Peer-Reviewed Original ResearchPosttraumatic stress disorderSymptom provocationActive-duty US Army soldiersSalience networkStress disorderPTSD participantsGlobal brain connectivityNodal strengthFunctional magnetic resonance imagingMagnetic resonance imagingBrain gray matterUS Army soldiersArmy soldiersDorsal salience networksFunctional dysconnectivityU.S. Army soldiersParietal cortexConnectivity findingsGray matterResonance imagingEffective therapeuticsFunctional connectivityAnterior insulaBrain connectivityGlobal signal regression
2015
Perceptual distortions and delusional thinking following ketamine administration are related to increased pharmacological MRI signal changes in the parietal lobe
Stone J, Kotoula V, Dietrich C, De Simoni S, Krystal JH, Mehta MA. Perceptual distortions and delusional thinking following ketamine administration are related to increased pharmacological MRI signal changes in the parietal lobe. Journal Of Psychopharmacology 2015, 29: 1025-1028. PMID: 26152321, DOI: 10.1177/0269881115592337.Peer-Reviewed Original ResearchConceptsPerceptual distortionBOLD responsePsychotomimetic States InventoryFunctional MRI acquisitionKetamine-induced effectsPerceptual alterationsDelusional thinkingBrain activityDelusional interpretationDelusional thoughtsCognitive symptomsBOLD increasesParietal cortexHealthy participantsParietal lobeStates InventorySubjective changesParacentral lobuleKetamine administrationSubcortical increasesKetamine effectsHealthy humansSignal changesMRI signal changesKetamine infusion
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 understandingLearningCognitionDecreased Beta2*‐nicotinic acetylcholine receptor availability after chronic ethanol exposure in nonhuman primates
Cosgrove KP, Kloczynski T, Bois F, Pittman B, Tamagnan G, Seibyl JP, Krystal JH, Staley JK. Decreased Beta2*‐nicotinic acetylcholine receptor availability after chronic ethanol exposure in nonhuman primates. Synapse 2010, 64: 729-732. PMID: 20340174, PMCID: PMC2904861, DOI: 10.1002/syn.20795.Peer-Reviewed Original ResearchConceptsChronic ethanol consumptionEthanol consumptionAlcohol consumptionNicotinic acetylcholine receptor availabilityAverage daily ethanol consumptionChronic ethanol exposureDaily ethanol consumptionEthanol-induced changesNicotinic acetylcholine receptorsSelf-administer ethanolIA-85380H withdrawalEthanol exposureReceptor availabilityAcetylcholine receptorsParietal cortexMale animalsTotal gramsBaselinePercent decreasePersistent changesWithdrawalMidbrainCortexAnimals
2005
Abnormal hemodynamics in schizophrenia during an auditory oddball task
Kiehl KA, Stevens MC, Celone K, Kurtz M, Krystal JH. Abnormal hemodynamics in schizophrenia during an auditory oddball task. Biological Psychiatry 2005, 57: 1029-1040. PMID: 15860344, PMCID: PMC2771438, DOI: 10.1016/j.biopsych.2005.01.035.Peer-Reviewed Original ResearchConceptsAuditory oddball taskHealthy participantsOddball taskThree-stimulus auditory oddball taskDiffuse brain abnormalitiesHealthy control subjectsNovelty processingWidespread pathologic processCerebral areasControl subjectsBrain abnormalitiesMagnetic resonance imaging dataAbnormal hemodynamicsPathologic processesSchizophrenia patientsParietal cortexCognitive functionHeterogeneous disorderCerebellar circuitsSchizophreniaAbnormalitiesSignificant activationSubcortical systemsFunctional magnetic resonance imaging (fMRI) dataPatients
1998
Dissociation of mnemonic and perceptual processes during spatial and nonspatial working memory using fMRI
Belger A, Puce A, Krystal J, Gore J, Goldman‐Rakic P, McCarthy G. Dissociation of mnemonic and perceptual processes during spatial and nonspatial working memory using fMRI. Human Brain Mapping 1998, 6: 14-32. PMID: 9673660, PMCID: PMC6873355, DOI: 10.1002/(sici)1097-0193(1998)6:1<14::aid-hbm2>3.0.co;2-o.Peer-Reviewed Original ResearchConceptsMiddle frontal gyrusPerceptual control taskMemory taskIntraparietal sulcusPerceptual domainFrontal gyrusLeft hemisphereExperiment 1Parietal cortexControl taskLeft inferior frontal gyrusRight middle frontal gyrusInferior occipitotemporal cortexNonspatial working memoryCommon brain regionsInferior frontal gyrusVentral visual pathwayDomain-specific activationFunctional magnetic resonanceInferior parietal cortexDorsolateral prefrontal cortexPerceptual processingWorking memoryPerceptual processesMnemonic demands
1995
Opiate Dependence and Withdrawal: Preliminary Assessment Using Single Photon Emission Computerized Tomography (SPECT)
Krystal J, Woods S, Kosten T, Rosen M, Seibyl J, Van Dyck C, Price L, Zubal I, Hoffer P, Charney D. Opiate Dependence and Withdrawal: Preliminary Assessment Using Single Photon Emission Computerized Tomography (SPECT). The American Journal Of Drug And Alcohol Abuse 1995, 21: 47-63. PMID: 7762544, DOI: 10.3109/00952999509095229.Peer-Reviewed Original ResearchConceptsRegional brain functionOpiate withdrawal signsSingle Photon Emission Computerized TomographyHealthy subjectsNaloxone administrationOpiate withdrawalOpiate dependenceBrain functionParietal cortexHexamethylpropyleneamine oximeWithdrawal signsNaloxone effectChronic opiate dependencePlacebo-controlled studyRegional alterationsComparison of patientsMethadone-maintained patientsRegional cerebral perfusionPhoton Emission Computerized TomographyOpiate-dependent patientsRight temporal cortexRight parietal cortexFunctional brain imaging technologiesSingle photon emissionEmission computerized tomography