Abstract
The authors deduced a second-order nonlinear differential equation that describes physiological tremors of a forearm from the model using a pair of antagonistic muscles. In order to show the effectiveness of this equation, acceleration of physiological tremors in dominant hands of 13 healthy aged subjects was measured, and the results were compared with those obtained by simulation using this equation. It was shown that the deduced nonlinear differential equation is effective, for the characteristic roots of characteristic equation of AR model of simulated tremor and those of measured tremor resemble well each other.
