Fig. 3.

Mean pointing deviation error across all 13 healthy controls before and after the prism adaptation procedure (PA) for the visual open-loop pointing task (VOL) and for the subjective straight ahead pointing (SSA) task, showing a post-prism shift in both tasks towards the left. Numbers on the x-axis represent pointing error in degrees, with positive values indicating deviation to the right and negative values indicating deviation to the left. Note the similar size of the prism-induced shift for the two tasks in healthy controls.