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对小鼠大脑皮层视觉感受区电位信号与呼吸和视觉刺激的关系分别进行了研究和分析.首先,通过对细胞膜神经冲动传导行为的分析,借助H0dgkin-Huxley模型,求解得到了脑电波电位信号.然后,通过小波分解和经验模态分解将小鼠脑电波进行多尺度分解,在不同尺度上将呼吸波与脑电波进行相关性分析.再之后,对小鼠视觉感受区电位信号变化与呼吸对应的脑电波关联性进行分析,建立了消除噪声和放大微弱信号的脑电波分离模型.最后,对去噪后的视觉刺激信号和呼吸信号进行Welch功率谱分析,通过对比不同视觉刺激信号下,呼吸对应脑电波的频率,证明小鼠视觉刺激信号的脑电波成份中不包含图形形状因素.
The relationship between the potential signal of visual cortex and the respiratory and visual stimuli of mouse cerebral cortex were studied and analyzed respectively.Firstly, the signal of brain wave potential was obtained by H0dgkin-Huxley model through the analysis of neural impulse conduction in the cell membrane. Then, by using wavelet decomposition and empirical mode decomposition, we decomposed mouse brain wave with multi-scale and analyzed the relationship between respiratory wave and brain wave at different scales.Furthermore, the change of potential signal and visual response , And established the model of brain wave separation to eliminate the noise and amplify the weak signal.Finally, Welch power spectrum analysis of the de-noised visual stimulation signal and respiratory signal was carried out. By comparing different visual stimuli signals, Corresponding to the frequency of brain waves, to prove that the visual signals of the mouse brain stimulation signal components do not include the shape of the shape factor.