Figure 3.

Subthalamic oscillatory activity and coupling during walking and gait freezing. (A) STN low-frequency power. No difference was found for the relative change of STN low-frequency power during gait freezing with respect to (effective) walking (i.e. zero line) for the two STNs and among them (STN+ versus STN−). (B) STN β-power. The relative change of STN β-power during gait freezing did not differ with respect to (effective) walking (i.e. zero line) for the two STNs and among them (STN+ versus STN−). (C) β-burst duration. No difference was found in the distribution of the β-burst duration during gait freezing with respect to (effective) walking for both STN and among them (STN+ versus STN−). (D) Interhemispheric STN coupling. Differences between the two STNs during gait freezing and (effective) walking did not reach statistical significance. STN+ and STN− refers to the side with more and less striatal dopaminergic innervation, respectively.