2022
Early neural activity changes associated with stimulus detection during visual conscious perception
Khalaf A, Kronemer SI, Christison-Lagay K, Kwon H, Li J, Wu K, Blumenfeld H. Early neural activity changes associated with stimulus detection during visual conscious perception. Cerebral Cortex 2022, 33: 1347-1360. PMID: 35446937, DOI: 10.1093/cercor/bhac140.Peer-Reviewed Original ResearchConceptsVisual conscious perceptionNeural activity changesConscious perceptionStimulus detectionContinuous performance taskCortical neural signalsGamma power increaseGamma power changesMedial occipital cortexMedial temporal cortexParietal-temporal cortexTarget letterNontarget stimuliPerformance taskVisual stimuliStimulus onsetPopulation neural activityBroadband gamma powerNeural activityTemporal cortexGamma powerActivity changesMotor responsePremotor areasOccipital cortex
2020
Analysis of multimodal physiological signals within and between individuals to predict psychological challenge vs. threat
Khalaf A, Nabian M, Fan M, Yin Y, Wormwood J, Siegel E, Quigley K, Barrett L, Akcakaya M, Chou C, Ostadabbas S. Analysis of multimodal physiological signals within and between individuals to predict psychological challenge vs. threat. Expert Systems With Applications 2020, 140: 112890. DOI: 10.1016/j.eswa.2019.112890.Peer-Reviewed Original ResearchSelf-reported judgmentsPerformance taskPhysiological respondingIndividual differencesMultimodal physiological signalsMental arithmetic taskPhysiological response patternsResponse patternsMotivated performanceThreat responsesGroup-level variationPsychological challengesArithmetic taskSubgroup of participantsPerformance domainsGroup-level comparisonsSubgroup of individualsPhysiological patternsPhysiological responsesSubject analysisTaskIntegrated analytic frameworkDifferent modalitiesRespondingIndividual evaluation