The Cognition of Maximal Reach Distance in Parkinson’s Disease

Figure 1

(a) Measurement of front ED. Participants stood on the starting position (dotted line). They stepped backward and stopped at the farthest point where they decided that they could grasp target (solid line). The distance from target to stopping point was regarded as ED. (b) Measurement of front AD. Participants reach out and grasp the target. The distance from target to farthest standing position was regarded as AD.

(a)

(b)