Fig. 8. Load had no effect on the area crossed by the distal end of the tibia for scratches aimed at either the posterior stimulus site (Ai–Di, open triangles) or the anterior stimulus site (Aii–Dii, open triangles). Shading indicates the likelihood of a particular position within the leg's workspace to be scratched. The greyscale represents probability density between 0 (white) and 0.004 (black) at 1 mm spatial resolution (see bar at bottom). White circle, the centre of density; white square, the maximum. (Ai,ii) unloaded condition; (Bi,ii) 142 mg load on the proximal femur; (Ci,ii) 142 mg load on the distal femur; (Di,ii) 142 mg load on the distal tibia. Number of trials as in Fig. 6.