Figure 3
From: Reinforcement learning control of a biomechanical model of the upper extremity

Elliptic via-point task. Elliptic movements generated by our learned policy conform to the \(\frac{2}{3}\) Power Law. (a) End-effector positions projected onto the 2D space (blue dots), where targets were subsequently placed along an ellipse of 15 cm width and 6 cm height (red curve). (b) Log-log regression of velocity against radius of curvature for end-effector positions sampled with 100 Hz when tracing the ellipse for 60 s.