We find that all the results are quite different between each original emg and its ten surrogate data , i . e . emg is not a linear random noise , but a nonlinear deterministic signal ( though it does not like a low dimensional chaos ) 也就是說,肌電不是線性隨機的噪聲,而是非線性的確定性信號(盡管它并不象是低維混沌) 。
Time domain noise is simulated by the mathematical pseudo uniform or normal random variable and coupled to deterministic signals such as rectangular ( rect ) , triangular ( tria ) , unit step exponential ( uexp ) , even exponential ( eexp ) , or gaussian ( gauss ) pulse voltages in finite number of time samples in finite time period 用數(shù)學(xué)類真均勻或常態(tài)隨機變數(shù)模擬時域雜訊,與定然時域訊號如,方形、三角、指數(shù)遞減、或高斯等電壓脈波在有限時域?圍之有限個時域取樣結(jié)合。