Compatible Dynamical Models of Environmental,Sensory, and Perceptual Systems

ABSTRACT

One of the cornerstones of the ecological stance in psychology is the compatibility, or symmetry, between animal and environment. In this article, it is argued that a first principles reevaluation of the dynamical systems that structure the information signals animals live through is an important step in understanding how compatibility is possible. What is especially important is how environmental properties are encoded by dynamical laws into the information signals of the environment and how these signals can reveal environmental properties. It is argued that that compatibility is not just 2-way compatibility between animal and environment but also 3-way compatibility of environmental, sensory, and perceptual systems. The argument is illustrated using a conceptual exegesis of 2 dynamical systems, Newtonian mechanics and Webster's acoustic horn equation. The discussion of the latter equation is accompanied by the extraction of articulatory information from speech signals of 50 speakers. It is believed that the work presented here further develops the theory of ecological psychology as well as its specific application to speech perception pioneered by Carol Fowler.