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시각 자극의 집중에 따른 시간 변화에 대한 뇌 유발전위의 공간 - 주파수간 상관 변화 분석

 이벽진  ;  유선국 
 Korean Journal of the Science of Emotion & Sensibility (감성과학), Vol.16(4) : 527-534, 2013 
Journal Title
 Korean Journal of the Science of Emotion & Sensibility (감성과학) 
Issue Date
Coherence ; Short-Time Fourier Transform ; Continuous Wavelet Transform
In this study, we analyzed spatial-frequency relationship related brain function for change of the time during attention al visual stimulus through the analysis of Coherence. With experimentation about ERP(Event Related Potential)data, it revealed that change of the phase synchronization between different scalp locations at band. ERP between left and right frontal lobes, between the frontal and central lobes showed the phase synchronization at the P100, N200, ERP between the frontal and occipital lobes showed the phase synchronization at the P300 related information of visual stimulus. Compared to STFT using the window of a fixed length, CWT is able to multi-resolution analysis with the adjustment of parameters of mother wavelet. Thus, coherence results with CWT was found to be effective for analysis of time-varying spatial-frequency relationship in ERP. The phase synchronization for inattention al visual stimulus was not observed.
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1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Yoo, Sun Kook(유선국) ORCID logo https://orcid.org/0000-0002-6032-4686
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