Figure 1.

Structure of the proposed model. The signals p, v and y represent position input, velocity input and feedback interaction, respectively. Node A and B are in the first layer at the medulla, and Node C is in the second layer at the thalamus. The pathway from A to C indicates the group Ia afferent pathway which transmits both velocity and position information with a short time delay, while the pathway from B to C indicates the group II afferent pathway which transmits only the position information with a long time delay.