2016
Amygdala volume is reduced in early course schizophrenia
Rich AM, Cho YT, Tang Y, Savic A, Krystal JH, Wang F, Xu K, Anticevic A. Amygdala volume is reduced in early course schizophrenia. Psychiatry Research Neuroimaging 2016, 250: 50-60. PMID: 27035063, PMCID: PMC4904038, DOI: 10.1016/j.pscychresns.2016.02.006.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingAmygdala volumeSchizophrenia patientsSubcortical structuresEarly course schizophrenia patientsEarly illness courseChronic schizophrenia patientsNeuropathology of schizophreniaMajor subcortical structuresSmaller amygdala volumesEarly course schizophreniaHealthy comparison subjectsBonferroni correctionGray matter volumeAcute stress responseMedication useIllness coursePathophysiologic changesGlobus pallidusIllness phaseNucleus accumbensHigh riskComparison subjectsMatter volumeHR subjects
2010
Individuals Family History Positive for Alcoholism Show Functional Magnetic Resonance Imaging Differences in Reward Sensitivity That Are Related to Impulsivity Factors
Andrews MM, Meda SA, Thomas AD, Potenza MN, Krystal JH, Worhunsky P, Stevens MC, O'Malley S, Book GA, Reynolds B, Pearlson GD. Individuals Family History Positive for Alcoholism Show Functional Magnetic Resonance Imaging Differences in Reward Sensitivity That Are Related to Impulsivity Factors. Biological Psychiatry 2010, 69: 675-683. PMID: 21126735, PMCID: PMC3677031, DOI: 10.1016/j.biopsych.2010.09.049.Peer-Reviewed Original ResearchConceptsMonetary incentive delay taskIncentive delay taskNAcc activationReward anticipationDelay taskFamily history-positive individualsAbnormal reward processingRegional brain activationNucleus accumbens activationFunctional magnetic resonanceReward system activitySubstance-abusing individualsReward prospectReward sensitivityNeural correlatesImpulsivity constructsSubstance abuse historyImpulsivity factorsReward processingBehavioral impulsivityAtypical activationBrain activationOutcome phaseBiological predispositionTask phases
2001
A neurobiological basis for substance abuse comorbidity in schizophrenia
Chambers R, Krystal J, Self D. A neurobiological basis for substance abuse comorbidity in schizophrenia. Biological Psychiatry 2001, 50: 71-83. PMID: 11526998, PMCID: PMC2913410, DOI: 10.1016/s0006-3223(01)01134-9.Peer-Reviewed Original ResearchConceptsDrug rewardLong-term substance abuseMedication side effectsPrior drug exposureSubstance abuse comorbidityNeuropathology of schizophreniaPrimary disease symptomsAddictive behaviorsDrug-seeking behaviorHippocampal dysfunctionDrug exposureFrontal cortexNucleus accumbensHippocampal formationSchizophrenic patientsSide effectsCognitive impairmentNegative symptomsSubstance abuseAltered integrationNeural circuitrySymptomsSchizophreniaMotivational changesComorbidities