南京航空航天大学学报2011，Vol.43Issue(6)：805-809,5.
基于5Hz频率光诱发的脑电信号θ波的时-频分析
Time-Frequent Analysis of EEG θ Wave Induced by 5 Hz Photic Stimulation
摘要
Abstract
The main difference of the percentages of energy of EEG 0 wave before and during 5 Hz photic stimulation is studied by utilizing time-frequency methods. The results show that the percentages of energy increase more visible on the forehead (F8), top (P4), central (C3)? Temporal (T6), and occipital (02). Within the first 20 s of photic stimulation, the percentage of regional a wave energy decreases from 45% of total energy to 30%, the percentage of 6 wave energy increases from the total energy of 25% to 35%, and keeps upward trend. In the middle 20 s, the percentage of 0 wave energy decreases. In the last 20 s, the percentage of 6 wave energy goes back to baseline level. These results suggest that 5 Hz photic stimulation within 20-30 s can drive EEG from dominant a brain waves to 9 waves. The percentage of brain wave energy is a new approach to response induced by low-frequency photic stimulation.关键词
光刺激/事件相关电位/小波变换/θ波/时-频分析Key words
photic stimulation/ event-related potentials/ wavelet transform/ 6 wave/ time-frequency analysis分类
医药卫生引用本文复制引用
丁尚文,钱志余,陈春晓,李韪韬,陶玲,钟元,郑杨..基于5Hz频率光诱发的脑电信号θ波的时-频分析[J].南京航空航天大学学报,2011,43(6):805-809,5.基金项目
国家自然科学基金(61075107)资助项目 （61075107）
江苏省普通高校研究生科研创新计划(CX10B_096Z)资助项目. （CX10B_096Z）
