Article

Fields studying movement generation, including robotics, psychology, cognitive
science, and neuroscience utilize concepts and tools related to the pervasiveness
of variability in biological systems. The concept of variability and the measures
for nonlinear dynamics used to evaluate this concept open new vistas for research
in movement dysfunction of many types. This review describes innovations in the
exploration of variability and their potential importance in understanding human
movement. Far from being a source of error, evidence supports the presence of an
optimal state of variability for healthy and functional movement. This
variability has a particular organization and is characterized by a chaotic
structure. Deviations from this state can lead to biological systems that are
either overly rigid and robotic or noisy and unstable. Both situations result in
systems that are less adaptable to perturbations, such as those associated with
unhealthy pathological states or absence of skillfulness.
CI - Copyright (c) 2011 Elsevier B.V. All rights reserved.

Langue : ANGLAIS