Neural Information Processing - Letters and Reviews

Vol. 12, Nos. 1-3, January-March 2008


pp. 43-51


Influence of Neural Delay in Sensorimotor Systems on the Control Performance and Mechanism in Bicycle Riding


Yusuke Azuma and Akira Hirose

Department of Electronic Engineering, The University of Tokyo

7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan




Neural sensorimotor systems have unavoidable delay in the processing. In this paper, we investigate the influence of the delay on control performance in numerical experiment with simple networks. Obtained results suggest not only the fact that the delay degrades control performance of reflex motion in proportion to the amount of the delay, but also the possibility that it influences the signal generation of relevant volitional motion. The motion generation mechanism seems dependent on the amount of delay. That is, when the delay increases beyond a certain threshold, the control strategy changes from a feedback method into a predictive one. An appropriate delay can even be in favor of the volitional motion learning in total.


Keywords – Motion learning, Developmental learning, Reinforcement learning, Reflex motion, Volitional motion