Research on phase synchronization and cross-frequency coupling in audiovisual working memory tasks
To gain a deeper understanding of the neural mechanisms and rhythmic coupling patterns in audiovisual working memory,we collected electroencephalogram(EEG)data from audiovisual working memory tasks.Through time-frequency analysis,we identified key rhythms and core electrodes,and employed multivariate pattern analysis to determine the crucial time windows.The results indicated that theta phase synchronization is vital during the memory presentation phase,with the frontal-temporal lobe synchronization involved in auditory memory,and frontal-parietal lobe synchronization in visual memo-ry,while cross-frequency coupling between theta and alpha was significantly enhanced only in specific brain areas related to the respective memory modality.Long-range theta synchronization coordinates central executive functions in WM-related brain regions,while alpha synchronization coordinates memory storage buffering.Theta-alpha coupling integrates information across modalities,revealing some of the neural mechanisms of visual-auditory working memory.
working memoryelectroencephalogramphase synchronizationcross-frequency coupling
万方数据
维普
