2023
Fingerprints of decreased cognitive performance on fractal connectivity dynamics in healthy aging
Kaposzta Z, Czoch A, Mukli P, Stylianou O, Liu D, Eke A, Racz F. Fingerprints of decreased cognitive performance on fractal connectivity dynamics in healthy aging. GeroScience 2023, 46: 713-736. PMID: 38117421, PMCID: PMC10828149, DOI: 10.1007/s11357-023-01022-x.Peer-Reviewed Original ResearchHealthy elderly individualsHealthy agingFunctional connectivityElderly individualsConnectivity strengthCognitive performanceBrain functional connectivityDynamic functional connectivity studiesFuture intervention strategiesFunctional connectivity studiesAge-related cognitive declineCognitive performance scoresResponse latencyElderly populationCognitive declineAge groupsSubject cohortYounger groupCognitive functionPotential targetSpearman correlationSubset of connectionsIntervention strategiesElectroencephalography recordingsFunctional connections
2022
Scale-Free Functional Brain Networks Exhibit Increased Connectivity, Are More Integrated and Less Segregated in Patients with Parkinson’s Disease following Dopaminergic Treatment
Stylianou O, Kaposzta Z, Czoch A, Stefanovski L, Yabluchanskiy A, Racz F, Ritter P, Eke A, Mukli P. Scale-Free Functional Brain Networks Exhibit Increased Connectivity, Are More Integrated and Less Segregated in Patients with Parkinson’s Disease following Dopaminergic Treatment. Fractal And Fractional 2022, 6: 737. PMID: 38106971, PMCID: PMC10723163, DOI: 10.3390/fractalfract6120737.Peer-Reviewed Original ResearchHealthy control individualsMini-Mental State ExaminationDopaminergic treatmentParkinson's diseaseFunctional connectivityMental State ExaminationStandard therapyPD patientsPD populationHC groupState ExaminationFunctional brain networksControl individualsPharmacological studiesSignificant positive correlationDiseaseBrain networksPatientsCognitive performanceAdult Reading TestPositive correlationTreatmentLong-term memoryTherapy
2021
Multifractal Functional Connectivity Analysis of Electroencephalogram Reveals Reorganization of Brain Networks in a Visual Pattern Recognition Paradigm
Stylianou O, Racz F, Kim K, Kaposzta Z, Czoch A, Yabluchanskiy A, Eke A, Mukli P. Multifractal Functional Connectivity Analysis of Electroencephalogram Reveals Reorganization of Brain Networks in a Visual Pattern Recognition Paradigm. Frontiers In Human Neuroscience 2021, 15: 740225. PMID: 34733145, PMCID: PMC8558231, DOI: 10.3389/fnhum.2021.740225.Peer-Reviewed Original ResearchFunctional connectivityHigher-order brain functionsFunctional connectivity analysisEyes-open stateBrain reorganizationHealthy volunteersBrain regionsBrain functionBrain connectivityDiseased populationsAnatomical networksSuccess rateFunctional couplingBrain networksEndpoint parametersNeuronal assembliesHuman brainConnectivity analysisObserved regional heterogeneityRecognition trialsLevelsRegional heterogeneityBrainTrialsRecognition paradigm
2019
Multifractal and entropy analysis of resting-state electroencephalography reveals spatial organization in local dynamic functional connectivity
Racz F, Stylianou O, Mukli P, Eke A. Multifractal and entropy analysis of resting-state electroencephalography reveals spatial organization in local dynamic functional connectivity. Scientific Reports 2019, 9: 13474. PMID: 31530857, PMCID: PMC6748940, DOI: 10.1038/s41598-019-49726-5.Peer-Reviewed Original ResearchConceptsDynamic functional connectivityFunctional connectivityResting-state brain activityResting-state electroencephalography recordingsFuture clinical researchResting-state electroencephalographyResting-state conditionsFunctional network topologyRegion-specific differencesHealthy subjectsPotential biomarkersBrain regionsClinical researchTemporal regionsOccipital regionBrain activityElectroencephalography recordingsBrainDFC analysisBiomarkers
2017
Increased prefrontal cortex connectivity during cognitive challenge assessed by fNIRS imaging.
Racz F, Mukli P, Nagy Z, Eke A. Increased prefrontal cortex connectivity during cognitive challenge assessed by fNIRS imaging. Biomedical Optics Express 2017, 8: 3842-3855. PMID: 28856054, PMCID: PMC5560845, DOI: 10.1364/boe.8.003842.Peer-Reviewed Original Research