The role of Oscillatory Theta Activity in Audiovisual Perception based on Wavelet Transform and ICA
Coherence of oscillatory neural signals might be an essential mechanism supporting multisensory perception.Previous studies have indicated that oscillatory theta activity is closely related to multisensory integrative processing.Here,we used ICA for artifact rejection and investigated discrete Daubechies wavelet for time–frequency analysis of the EEG records explored the multisensory processing in the evoked theta response(3.91–7.81 Hz).We observed an early network of multisensory interactions occurring within a relatively restricted time range(0–500ms)in the stimulus-evoked oscillatory theta activity over multiple scalp areas,the findings demonstrate that evoked oscillatory theta activity plays an important role in early multisensory integrative processing.The results support the notion that low frequency coherence modulations are correlated in audiovisual perception,and provide further evidence that oscillatory brain dynamics in the theta frequency range are functionally related to processing linked to the sensory-motor system.
Audiovisual Theta Oscillation Multisensory Wavelet
Yansong Geng Xiaoshan Bi Xin Ma Tianyi Yan Weiping Yang Jinglong Wu
School of Life Science Beijing Institute of Technology Beijing,China 100081 Graduate School of Natural Science and Technology Okayama University Okayama,Japan 700-8530
国际会议
The 2014 ICME International Conference on Complex Medical Engineering (CME2014)ICME复合医学工程国际会议
台北
英文
375-380
2014-06-26（万方平台首次上网日期，不代表论文的发表时间）