Nonlinear dynamics and reference frame in motor development of infants

Abstract

Human perceptual-motor behaviors emerge from dynamic interaction among the neural system, musculoskeletal system and the environment. Generation of stable and flexible behaviors is captured on the basis of the nonlinear dynamical systems theory. The theory provides deep insight into the developmental mechanism of perceptual-motor behaviors in young infants. First, I shall present my argument that the spontaneous dynamics of the neuromuscular system in young infants is the key for the acquisition of new actions in the complex environment. Second, I discuss the mechanisms of selection of frames of reference, such as the retinal and environmental coordinates, and of the integration of different frames of reference in young infants. Some of the empirical studies addressing these issues are shown.