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 resolutionSpeechAnalysis 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
2017
A brain-computer interface based on functional transcranial doppler ultrasound using wavelet transform and support vector machines
Khalaf A, Sybeldon M, Sejdic E, Akcakaya M. A brain-computer interface based on functional transcranial doppler ultrasound using wavelet transform and support vector machines. Journal Of Neuroscience Methods 2017, 293: 174-182. PMID: 29017899, DOI: 10.1016/j.jneumeth.2017.10.003.Peer-Reviewed Original ResearchMeSH KeywordsBlood Flow VelocityBrainBrain-Computer InterfacesCerebrovascular CirculationCognitionFeasibility StudiesFemaleFunctional NeuroimagingHumansImaginationLanguageLinear ModelsMaleNeuropsychological TestsRestRotationSpace PerceptionSupport Vector MachineUltrasonography, Doppler, TranscranialWavelet AnalysisYoung AdultConceptsFunctional transcranial DopplerWord generation taskCognitive tasksMental rotationGeneration taskFunctional transcranial Doppler ultrasoundReal-time BCIMental rotation taskWord generationRotation taskNeural activationBrain-computer interfaceFive-level wavelet decompositionFTCD signalsTaskAverage accuracyBCISignificant improvementVector machine