Figure 13.

Simple ramp and memory-based pursuit responses. (A) Eye velocity responses to left (negative) and right (positive) from a single monkey during simple ramp pursuit (SR) vs. memory pursuit (MP). (B) Simulations of model (thick lines) corresponding to SR and MP responses (thin lines) shown in (A). Parameter values (see Figure 2): Te = 0.12 s; β = 1; K₀ = 3 (right); K₀ = 2 (left). (C and D) Mean SR and MP responses compared with responses to memory pursuit with Popout (Pop) in six Controls and seven PD patients. Averages of left- and right-going responses. From Ito et al. (2012).