Credit Assignment during Movement Reinforcement Learning
Figure 1
A): The cartoon illustration of the setup. Participants sat before a desk and made movement trajectories on the horizontal desktop with a hand-held stylus. The hand displacement was registered by a robot. The feedback was provided via a computer monitor placed on the desk. B): A graphical representation of how trajectories were varied in both direction (α) and curvature (β). C): The learning progress of matching trajectories to a hidden target trajectory within a session of 25 trials.