Article

Postural control acquired during learning functional reaching movements has not
been well examined. Fourteen healthy adults practiced a serial reaching task 300
times. Task acquisition was examined considering two types of action-goals [1]:
hand accuracy and consistency as the focal action-goals and control of
equilibrium as the postural action-goal [2,3]. Hand accuracy and consistency were
measured as absolute constant error and variable error. Postural control was
measured by time to boundary (TtB). Improvements were expected in the focal goals
and postural goal; however the timing of improvements might reflect explicit and
implicit learning processes. Practice effects resulted in improvements for hand
task accuracy, consistency and an increase in TtB values. Changes in postural
control may reflect improved efficiency or improved perception-action coupling by
the postural system within task performance.
CI - Copyright 2009 Elsevier B.V. All rights reserved.

Langue : ANGLAIS