非線形振動子モデルパラメータを用いたてんかん性異常脳波の解析

抄録

Four kinds of nonlinear oscillators, which include a Duffing oscillator and a van der Pol oscillator, are employed to analyze the brain wave in an epilepsy model rat. Extracting time series data with alpha frequency bands from 8 to 13Hz from the frequency analysis window setting in brain waves, we determine each parameter for nonlinear oscillator, we found that the outbreak of abnormality induces an extreme reduction of the term related to nonlinearity and the input terms increase with the growth of the epileptic wave.