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
Hybrid EEG–fTCD Brain–Computer Interfaces
Khalaf A, Sejdic E, Akcakaya M. Hybrid EEG–fTCD Brain–Computer Interfaces. Cognitive Science And Technology 2020, 295-314. DOI: 10.1007/978-3-030-34784-0_15.Peer-Reviewed Original ResearchFunctional transcranial Doppler ultrasoundBrain-computer interfaceWord generationBrain activityNoninvasive brain-computer interfaceHybrid brain-computer interfaceMental rotation taskDifferent brain activitiesElectrical brain activityCognitive tasksPresentation paradigmRotation taskVisual stimuliEEG recording deviceLimited speechNovel hybrid brain-computer interfaceNeuroimaging modalitiesPhysical abilityElectroencephalographyTaskComputer interfaceTask problemMI presentationHigh temporal resolutionSpeech
2018
EEG-based neglect assessment: A feasibility study
Khalaf A, Kersey J, Eldeeb S, Alankus G, Grattan E, Waterstram L, Skidmore E, Akcakaya M. EEG-based neglect assessment: A feasibility study. Journal Of Neuroscience Methods 2018, 303: 169-177. PMID: 29614297, PMCID: PMC7156006, DOI: 10.1016/j.jneumeth.2018.03.019.Peer-Reviewed Original ResearchConceptsSpatial neglectPencil testsPassive BCI systemAutomatic attentionTarget stimuliSubjects' attentionComputerized testsVisual stimuliNeuropsychological syndromesAttention levelVisual spaceEEG responsesHealthy participantsNeglect assessmentsStimuliCurrent assessment methodsTraditional paperElectroencephalographyDynamic assessmentDifferent processingEEG signalsBCI systemCortical lesionsAttentionComplex environments