2021
Learning hierarchical sequence representations across human cortex and hippocampus
Henin S, Turk-Browne NB, Friedman D, Liu A, Dugan P, Flinker A, Doyle W, Devinsky O, Melloni L. Learning hierarchical sequence representations across human cortex and hippocampus. Science Advances 2021, 7: eabc4530. PMID: 33608265, PMCID: PMC7895424, DOI: 10.1126/sciadv.abc4530.Peer-Reviewed Original ResearchConceptsOrdinal positionTransitional probabilitiesBrain areasEarliest brain areasGradient of complexityVisual sequencesCortico-hippocampal circuitsNeural representationNeural trackingEarly processingBrain's abilityTemporal regularityStatistical learningAssociative regionsSensory inputLow-level featuresHuman cortexSequence representationParallel computational systemsMultiple levelsComputational systemsIntracranial electrodesCortexHippocampusProcessing
2019
Neural computations of threat in the aftermath of combat trauma
Homan P, Levy I, Feltham E, Gordon C, Hu J, Li J, Pietrzak RH, Southwick S, Krystal JH, Harpaz-Rotem I, Schiller D. Neural computations of threat in the aftermath of combat trauma. Nature Neuroscience 2019, 22: 470-476. PMID: 30664770, PMCID: PMC6829910, DOI: 10.1038/s41593-018-0315-x.Peer-Reviewed Original ResearchConceptsPTSD symptomsPost-traumatic stress disorder symptomsHigher PTSD symptom severityThreat-predictive cuesPTSD symptom severityAssociative threatPredictive cuesNeural trackingDisorder symptomsPrediction errorCombat veteransDynamic learning rateNegative outcomesCombat traumaSmaller amygdala volumesNeural computationLatent markersSymptomatic veteransSymptom severityAmygdala volumeAssociabilityCuesLearning rateVeteransSymptoms
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