Figure 5. Trajectories of reaching for (a) critical noise amplitude, D = 3.3, (b) subcritical noise amplitude, D = 2.0, and (c) supercritical noise amplitude, D = 7.0.

Solid line, which denotes hand position, depicts the transition from the resting position (x = −1) to the target position (x = 1). Dashed line denotes the stimulus – the sinusoidal “kick” with amplitude A ₀ = 0.25.