Prisms to Shift Pain Away: Pathophysiological and Therapeutic Exploration of CRPS with Prism Adaptation

Figure 4

Circle drawing task for controls and CRPS patients in the three conditions (no vision, hand vision, and full vision) and for the two hands (left and right for controls, healthy and affected hands for patients). Overall CRPS tended to perform larger circles than controls. The more the visual feedback was available, the smaller the circles were for both controls and patients. A tendency to asymmetry between the two hands was paradoxically observed when vision was available in both groups. Errors bars depict the standard error of the mean.