2024
Amygdala Cannabinoid 1 Receptor, Pain Response, and Emotional Numbing in Trauma-Exposed Individuals
Korem N, Hillmer A, D’Souza D, Nia A, Levy I, Pietrzak R, Harpaz-Rotem I. Amygdala Cannabinoid 1 Receptor, Pain Response, and Emotional Numbing in Trauma-Exposed Individuals. JAMA Network Open 2024, 7: e2432387. PMID: 39250156, PMCID: PMC11385051, DOI: 10.1001/jamanetworkopen.2024.32387.Peer-Reviewed Original ResearchMeSH KeywordsAdultAmygdalaEmotionsFemaleHumansMagnetic Resonance ImagingMalePainReceptor, Cannabinoid, CB1Stress Disorders, Post-TraumaticYoung Adult
2023
Neural patterns differentiate traumatic from sad autobiographical memories in PTSD
Perl O, Duek O, Kulkarni K, Gordon C, Krystal J, Levy I, Harpaz-Rotem I, Schiller D. Neural patterns differentiate traumatic from sad autobiographical memories in PTSD. Nature Neuroscience 2023, 26: 2226-2236. PMID: 38036701, DOI: 10.1038/s41593-023-01483-5.Peer-Reviewed Original ResearchConceptsPost-traumatic stress disorderTraumatic memoriesAutobiographical memoryNeural patternsIntersubject representational similarity analysisSimilar neural representationsRepresentational similarity analysisPosterior cingulate cortexTrauma memoriesMnemonic featuresNegative memoriesMultivoxel patternsNeural representationCognitive stateHippocampal representationsCognitive entitiesStress disorderCingulate cortexNeural activityTraumatic narrativesIndividual symptom severitySemantic representationMemory typesOwn memoryMemoryLong term structural and functional neural changes following a single infusion of Ketamine in PTSD
Duek O, Korem N, Li Y, Kelmendi B, Amen S, Gordon C, Milne M, Krystal J, Levy I, Harpaz-Rotem I. Long term structural and functional neural changes following a single infusion of Ketamine in PTSD. Neuropsychopharmacology 2023, 48: 1648-1658. PMID: 37270621, PMCID: PMC10517133, DOI: 10.1038/s41386-023-01606-3.Peer-Reviewed Original ResearchMeSH KeywordsExtinction, PsychologicalHumansKetamineMidazolamPilot ProjectsPsychotherapyStress Disorders, Post-TraumaticConceptsKetamine recipientsSingle infusionMain study outcomeTiming of administrationEnd of treatmentNMDA receptor antagonistFunctional neural changesFrequency of administrationSignificant clinical implicationsTrauma-focused psychotherapyBrief exposure therapyAmygdala-vmPFC connectivityPost-retrieval extinctionKetamine doseKetamine administrationReceptor antagonistTrauma scriptsNeural changesClinical implicationsDecreased connectivityExposure therapyKetamineTrauma memoriesStudy outcomesUncinate fasciculusNeural valuation of rewards and punishments in posttraumatic stress disorder: a computational approach
Jia R, Ruderman L, Pietrzak R, Gordon C, Ehrlich D, Horvath M, Mirchandani S, DeFontes C, Southwick S, Krystal J, Harpaz-Rotem I, Levy I. Neural valuation of rewards and punishments in posttraumatic stress disorder: a computational approach. Translational Psychiatry 2023, 13: 101. PMID: 36977676, PMCID: PMC10050320, DOI: 10.1038/s41398-023-02388-4.Peer-Reviewed Original ResearchMeSH KeywordsBrain MappingFearHumansMagnetic Resonance ImagingMalePrefrontal CortexPunishmentRewardStress Disorders, Post-TraumaticConceptsPosttraumatic stress disorderValuation systemStress disorderCombat veteransMaintenance of PTSDSubjective valueBrain valuation systemNeural valuation systemVentromedial prefrontal cortexFunctional MRI studyFunction of symptomsMale combat veteransNeural valuationSeries of choicesFear learningPunishment processingPosttrauma symptomsPTSD symptomsNeural encodingNeural mechanismsUncertain optionsPrefrontal cortexSubjective valuationVentral striatumMonetary gainsEvaluating the Evidence for Brain-Based Biotypes of Psychiatric Vulnerability in the Acute Aftermath of Trauma
Ben-Zion Z, Spiller T, Keynan J, Admon R, Levy I, Liberzon I, Shalev A, Hendler T, Harpaz-Rotem I. Evaluating the Evidence for Brain-Based Biotypes of Psychiatric Vulnerability in the Acute Aftermath of Trauma. American Journal Of Psychiatry 2023, 180: 146-154. PMID: 36628514, PMCID: PMC9898083, DOI: 10.1176/appi.ajp.20220271.Peer-Reviewed Original ResearchMeSH KeywordsAdultBrainFemaleHumansLongitudinal StudiesMaleNeuroimagingProspective StudiesStress Disorders, Post-TraumaticConceptsPosttraumatic psychopathologyPsychiatric vulnerabilityGeneral hospital emergency departmentHospital emergency departmentRecent trauma survivorsAdditional replication studiesEmergency departmentObjective neural markersDifferent longitudinal patternsProspective symptomsMonths posttraumaAcute aftermathPsychiatric disordersEffective personalized treatmentTrauma exposureFunctional MRIPersonalized treatmentConsistent subgroupTreatment implicationsNeural activityAssessment 1Neural markersLongitudinal studyNeurobiological indicesDiagnostic methods