The third volume in this series presents the state of the art in advanced modeling methodologies as well as their application to problems of biomedical interest. Here, contributors discuss current studies of nonlinear dynamics of physiological systems, covering a broad spectrum of topics ranging in scope from methodological issues of nonlinear modeling to quantitative interpretations of nonlinear models of physiological function. Discussions feature the Volterra-Wiener approach of nonparametric modeling of nonlinear dynamic systems.