Expression for mathematical models of time series data in dual space — Expression of balance function during galvanic vestibular stimulation

摘要

The authors proposed a method to construct a stochastic differential equation describing a non-Gaussian process in stationary states and could obtain a static potential function in the meaning of the temporal average. However, it was suggested that the potential function changes temporally on the basis of some analysis for the climatic change. In this paper, we regard the changes as a motion process in a dual space composed of coefficients of the potential function and estimate the number of unobservable variables.