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

Figure 2

Circle drawing task. Example of circle drawing task for a control (a) and a patient (b). LH: left hand; RH: right hand. The blue tracks depict the actual drawing performed by the subject with the left hand (LH) or right hand (RH), whereas the red tracks represent the ellipses fitted to the drawing. The red straight lines depict each ellipse main axis, showing a limited variability in orientation and size. Note that the neglect-like prediction that the left affected hand produces smaller circles is not verified in this representative patient.

(a)

(b)