Figure 8.

Short-term and long-term effects of DBS with uni- and bipolar electrodes on akinesia as measured by forced sidestepping of the forepaws in the forehand direction in the stepping tests. (a) and (b) refer to test groups and controls, respectively. Different column patterns indicate different times of behavioral testing; white: before 6-OHDA or sham lesion; black: 12–14 days after 6-OHDA or sham lesion; gray and hatched: after the durations of DBS or sham stimulation indicated in the group labels. For experimental details see Table 1. Significance levels are indicated with asterisks as follows: ^∗∗p ≤ 0.01, ^∗p ≤ 0.05, b (borderline): 0.05 < p ≤ 0.08 according to one-way ANOVA. Asterisks above black columns refer to white columns; all others refer to black columns.