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 memoryMemory
1993
Psychobiologic Mechanisms of Posttraumatic Stress Disorder
Charney DS, Deutch AY, Krystal JH, Southwick SM, Davis M. Psychobiologic Mechanisms of Posttraumatic Stress Disorder. JAMA Psychiatry 1993, 50: 294-305. PMID: 8466391, DOI: 10.1001/archpsyc.1993.01820160064008.Peer-Reviewed Original ResearchConceptsPosttraumatic stress disorderStress disorderPathophysiology of PTSDAvoidance of stimuliFailure of extinctionFear conditioningTraumatic memoriesMemory processesAutonomic hyperarousalTraumatic eventsEffects of stressCore symptomsPersistent reexperiencingPsychobiologic mechanismsAdaptive behavioralBrain structuresNeurochemical systemsNeurobiologic mechanismsReexperiencingParallel activationHyperarousalDisordersChronic courseTrauma resultsBehavioral sensitization