Fig 1.

A) Experimental set-up showing how the trial area was drawn based on participants’ arm length. B) Cartoon illustration of the 10 cm leftward perturbation of the position on which the feedback was based. The blue fly was the movement target. C) Procedure, the dotted line indicates the lateral perturbation. D) Cartoon illustration of how the reward depended on the error in the different reward conditions. E) Reward only and reward + error feedback conditions.