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
Towards optimal visual presentation design for hybrid EEG—fTCD brain–computer interfaces
Khalaf A, Sejdic E, Akcakaya M. Towards optimal visual presentation design for hybrid EEG—fTCD brain–computer interfaces. Journal Of Neural Engineering 2018, 15: 056019. PMID: 30021931, DOI: 10.1088/1741-2552/aad46f.Peer-Reviewed Original ResearchConceptsFunctional transcranial Doppler ultrasoundMental rotationTerms of accuracyTransfer rateFTCD signalsHybrid systemDesign approachReal-time BCIVisual presentationFeasible candidateMotor imageryInterface systemHigh accuracyVisual stimulation techniqueElectrical brain activityBrain-computer interface (BCI) systemsHybrid BCIHybrid combinationCognitive tasksPower spectrumSuch promising resultsHybrid brain-computer interface (BCI) systemFixation crossAccuracyDesign
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