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- W2286578309 abstract "AbstractThe study investigates the phase-locking properties of EEG/MEG oscillations in photic driving experiments. A flicker stimulus in the form of repetitive light flashes is used to study the time-variant spectral and phase characteristics of EEG/MEG components during the entrainment of the alpha oscillation by individually adapted flicker frequencies. Two groups of healthy volunteers are investigated: volunteers with a high degree of entrainment effects (group #1) and those with a low degree of entrainment (group #2). By means of time-variant power spectrum and phase-locked power spectrum analysis as well as amplitude-free phase-locking analysis (phase-locking index), the frequency ranges of phase-locked oscillations are identified and quantified. Gamma oscillations are phase-locked with the onset of the flicker stimulation (time-locked) and the entrained alpha oscillation shows a phase-locking approximately 200ms after flicker onset. This holds true for both groups. The results shed light on the coordination characteristics of the brain’s activities and provide the basis for a more detailed analysis of time-variant linear and non-linear interactions between the identified frequency ranges.KeywordsGamma OscillationFlicker FrequencyAlpha OscillationEntrainment EffectFlicker StimulusThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves." @default.
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- W2286578309 date "2009-01-01" @default.
- W2286578309 modified "2023-09-25" @default.
- W2286578309 title "Time-Variant Phase-Locking Properties of EEG/MEG Oscillations during Photic Driving" @default.
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- W2286578309 doi "https://doi.org/10.1007/978-3-642-03882-2_533" @default.
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