FIG. 4.

Stick figure representation of hindlimb kinematics before transection and 5 weeks post-grafting. An exemplar step for one cat from each experimental group is presented. Each stick figure is a selection of frames (displayed at 60 Hz; original recording at 300 Hz) during a single step on the treadmill at 0.4 m/sec (stance is represented as solid lines, while swing is represented as dotted lines). The step for the CONTROL cat post-transection is representative of the majority of steps recorded in the CONTROL cats, and shows dorsi-stepping during the stance phase and dragging during the swing phase.