Recognition for Switching of Feedback and Feedforward Process in Motor internal model.

The internal model was proposed by Kawato, in order to express physical motion by associativity of feedback and feedforward control processes. In this paper, we test the internal model in an experiment in which participants push a button on en equipment to match a number displayed on a computer screen. The experimental results can be interpreted as a change in the relative contributions of feedback and feedforward control processes in the internal model.